Pubblicazioni dell'autore: Giovanni Ummarino [Rubrica]

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Numero di pubblicazioni : 152.

2017

Capitolo di libro Daghero, D.; Ummarino, G.A.; Gonnelli, R.S. (2017)
Andreev Reflection and Related Studies in Low-Dimensional Superconducting Systems. In: The Oxford Handbook of Small Superconductors / Daghero D., Ummarino G.A., Gonnelli R.S. Oxford University Press, Oxford (UK), pp. 144-182. ISBN 9780198738169 [Disponibilità ristretta]
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Articolo di rivista Piatti, E.; Daghero, D.; Ummarino, G.A.; Laviano, F.; Nair, J.R.; Cristiano, R.; Casaburi, A.; Portesi, C.; Sola, A.; Gonnelli, R.S. (2017)
Control of bulk superconductivity in a BCS superconductor by surface charge doping via electrochemical gating. In: PHYSICAL REVIEW. B, vol. 95 n. 14, 140501-1-140501-5. - ISSN 2469-9950
Web of Science: 2 - Scopus: 1
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Articolo di rivista Ghigo, Gianluca; Ummarino, Giovanni; Gozzelino, Laura; Gerbaldo, Roberto; Laviano, Francesco; Torsello, Daniele; Tamegai, T. (2017)
Effects of disorder induced by heavy-ion irradiation on (Ba1−x K x )Fe2As2 single crystals, within the three-band Eliashberg s± wave model. In: SCIENTIFIC REPORTS, vol. 7, 13029-. - ISSN 2045-2322
Web of Science: 0 - Scopus: 0

Articolo di rivista Ghigo, G.; Ummarino, G.A.; Gozzelino, L.; Tamegai, T. (2017)
Penetration depth of Ba1−xKxFe2As2 single crystals explained within a multiband Eliashberg s± approach. In: PHYSICAL REVIEW. B, vol. 96 n. 1, 014501-. - ISSN 2469-9950
Web of Science: 1 - Scopus: 1

Articolo di rivista Ummarino, Giovanni; Piatti, Erik; Daghero, Dario; Gonnelli, Renato; Sklyadneva, Irina Y.U.; Chulkov, E.V.; Heid, R. (2017)
Proximity Eliashberg theory of electrostatic field-effect doping in superconducting films. In: PHYSICAL REVIEW. B, vol. 96 n. 6, 064509-1-064509-9. - ISSN 2469-9950
Web of Science: 0 - Scopus: 0
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Articolo di rivista Ummarino, Giovanni; Daghero, Dario; Tortello, Mauro; Gonnelli, Renato (2017)
Superconductivity on the Verge of a Pressure-Induced Lifshitz Transition in CaFe2As2: an Interpretation Within the Eliashberg Theory. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM. - ISSN 1557-1939
Scopus: 0

Articolo di rivista Ummarino, Giovanni; Gallerati, Antonio (2017)
Superconductor in a weak static gravitational field. In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, vol. 77 n. 8. - ISSN 1434-6044 [Disponibilità ristretta]
Web of Science: 0 - Scopus: 0
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2016

Articolo di rivista Gonnelli, R.S.; Daghero, D.; Tortello, M.; Ummarino, G.A.; Bukowski, Z.; Karpinski, J.; Reuvekamp, P.G.; Kremer, R.K.; Profeta, G.; Suzuki, K.; Kuroki, K. (2016)
Fermi-Surface Topological Phase Transition and Horizontal Order-Parameter Nodes in CaFe2As2 under Pressure. In: SCIENTIFIC REPORTS, vol. 6, 26394-1-26394-11. - ISSN 2045-2322
Web of Science: 2 - Scopus: 4
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Articolo in atti di convegno Ummarino, G.A. (2016)
G.A. Ummarino. In: XIV International Seminar MATHEMATICAL MODELS & MODELING IN LASER PLASMA PROCESSES & ADVANCED SCIENCE TECHNOLOGIES (LPpM3), Moscow (Russia), from July 4 to July 9 2016. p. 44

Articolo di rivista Ummarino, G.A. (2016)
Phenomenology of CaKFe4As4 explained in the framework of four bands Eliashberg theory. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 529, pp. 50-53. - ISSN 0921-4534
Web of Science: 0 - Scopus: 0

Articolo di rivista Piatti, E.; Sola, A.; Daghero, D.; Ummarino, G.A.; Laviano, F.; Nair, J.R.; Gerbaldi, C.; Cristiano, R.; Casaburi, A.; Gonnelli, R.S. (2016)
Superconducting Transition Temperature Modulation in NbN via EDL Gating. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 29 n. 3, pp. 587-591. - ISSN 1557-1939 [Disponibilità ristretta]
Web of Science: 4 - Scopus: 4
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2015

Libro Ummarino, G.A; Sara, Galasso (2015)
Esercizi svolti di fisica II elettromagnetismo e ottica. CLUT editrice, Torino, pp. 1-211. ISBN 978-88-7992-385-9

Articolo di rivista Ummarino, G.A; Daghero, D (2015)
Possible mixed coupling mechanism in FeTe_(1-x)Se_(x) within a multiband Eliashberg approach. In: JOURNAL OF PHYSICS. CONDENSED MATTER, vol. 27 n. 43, 435701-1-435701-6. - ISSN 0953-8984 [Disponibilità ristretta]
Web of Science: 1 - Scopus: 1
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Articolo di rivista Ummarino, G.A.; Galasso, S.; Pecchio, P.; Daghero, D.; Gonnelli, R.S.; Kurth, F.; Iida, K.; Holzapfel, B. (2015)
Resistivity in Ba(Fe1−xCox)2As2: Comparison of thin films and single crystals. In: PHYSICA STATUS SOLIDI. B, BASIC RESEARCH, vol. 252 n. 4, pp. 821-827. - ISSN 1521-3951 [Disponibilità ristretta]
Web of Science: 0 - Scopus: 0
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2014

Articolo di rivista C Bonavolontà;L Parlato;C De Lisio;M Valentino;G P Pepe;I Kazumasa;F Kurth;E Bellingeri;I Pallecchi;M Putti;C Ferdeghini;G A Ummarino;F Laviano (2014)
Femtosecond spectroscopy in a nearly optimally doped Fe-based superconductors FeSe0.5Te0.5and Ba(Fe1−xCox)2As2/Fe thin film. In: JOURNAL OF PHYSICS. CONFERENCE SERIES, vol. 507, 012004-. - ISSN 1742-6596
Web of Science: 0 - Scopus: 0

Articolo in atti di convegno Daghero D., Galasso S., Pecchio P., Tortello M., Ummarino G.A., Gonnelli R.S. (2014)
Point contact spectroscopy in Fe-based multiband superconductors: Recent advancements and future challenges. In: International Conference on Multi-Condensate Superconductivity and Superfluidity in Solids and Ultracold Gases (MULTISUPER 2014), Camerino (IT), 24 - 27 June 2014. p. 21

Articolo di rivista D Daghero; P Pecchio; G A Ummarino; F Nabeshima; Y Imai; A Maeda; I Tsukada; S Komiya; R S Gonnelli (2014)
Point-contact Andreev-reflection spectroscopy in Fe(Te,Se) films: multiband superconductivity and electron-boson coupling. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 27 n. 12, 124014-1-124014-8. - ISSN 0953-2048 [Disponibilità ristretta]
Web of Science: 4 - Scopus: 3
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2013

Articolo di rivista Pecchio, P.; Daghero, D.; Ummarino, G.A.; Gonnelli, R.S.; Kurth, F.; Holzapfel, B.; Iida, K. (2013)
Doping and critical-temperature dependence of the energy gaps in Ba(Fe_{1−x}Co_{x})_{2}As_{2} thin films. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 88 n. 17, 174506-1-174506-9. - ISSN 1098-0121
Web of Science: 6 - Scopus: 5
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Articolo in atti di convegno Ummarino, G.A. (2013)
Eliashberg theory. In: Autumn School Correlated Electrons 2013, Forschungszentrum Jülich, September 23-27. 13.1-13.36 [Disponibilità ristretta]
Web of Science: 2 - Scopus: 2
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Articolo di rivista Ummarino, G.A.; Galasso, S.; Daghero, D.; Tortello, M.; Gonnelli, R.S.; Sanna, A. (2013)
Normal and superconducting properties of LiFeAs explained in the framework of four-band Eliashberg theory. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 492, pp. 21-24. - ISSN 0921-4534 [Disponibilità ristretta]
Web of Science: 2 - Scopus: 2
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Articolo di rivista Ummarino Ga; Galasso Sara; Sanna A (2013)
A phenomenological multiband Eliashberg model for LiFeAs. In: JOURNAL OF PHYSICS. CONDENSED MATTER, vol. 25, 205701-. - ISSN 0953-8984 [Disponibilità ristretta]
Web of Science: 6 - Scopus: 5
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2012

Articolo in atti di convegno Daghero D., Tortello M., Ummarino G.A., Stepanov V.A., Bukowski Z., Zhigadlo N.D., Karpinski J., Iida K., Holzapfel B., Reuvekamp P., Kremer R.K., Gonnelli R.S. (2012)
Directional point-contact Andreev-reflection measurements in 122 Fe-based superconductors: order-parameter symmetry and Fermi surface topology. In: Phase Separation and Superstripes in High Temperature Superconductors and Related Materials, Erice (Sicily), 11-17 luglio 2012. p. 106

Articolo di rivista Daghero, D; Tortello, M; Ummarino, G A; Stepanov, V A; Bernardini, F; Tropeano, M; Putti, M; Gonnelli, R.S. (2012)
Effects of isoelectronic Ru substitution at the Fe site on the energy gaps of optimally F-doped SmFeAsO. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 25 n. 8, 084012-1-084012-11. - ISSN 0953-2048 [Disponibilità ristretta]
Web of Science: 10 - Scopus: 10
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Articolo di rivista Ummarino Ga (2012)
Feedback Effect in Iron Pnictide Superconductors. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 25, pp. 1333-1337. - ISSN 1557-1939 [Disponibilità ristretta]
Web of Science: 1 - Scopus: 1
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Articolo di rivista Daghero, D.; Paolucci, F.; Sola, A.; Tortello, M.; Ummarino, G.A.; Agosto, M.; Gonnelli, R.S.; Nair.J.R.; Gerbaldi, C. (2012)
Large Conductance Modulation of Gold Thin Films by Huge Charge Injection via Electrochemical Gating. In: PHYSICAL REVIEW LETTERS, vol. 108 n. 6, 066807-1-066807-5. - ISSN 0031-9007 [Disponibilità ristretta]
Web of Science: 25 - Scopus: 22
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Articolo in atti di convegno R.S. Gonnelli, M. Tortello, D. Daghero, G.A. Ummarino, V.A. Stepanov, Z. Bukowski, N.D. Zhigadlo, J. Karpinski, K. Iida, B. Holzapfel, P. Reuvekamp, R.K. Kremer (2012)
The Order-Parameter Symmetry and Fermi Surface Topology of 122 Fe-Based Superconductors: A Directional Point-Contact Andreev-Reflection Study. In: 3rd INTERNATIONAL CONFERENCE ON SUPERCONDUCTIVITY AND MAGNETISM - ICSM2012, Kumburgaz, Istanbul, Turkey, 29 April-4 May, 2012. p. 1091

Articolo di rivista Sanna, A.; Pittalis, S.; Dewhurst, J.K.; Monni, M.; Sharma, S.; Ummarino, G.A.; Massida, S.; Gross, E.K.U. (2012)
Phononic self-energy effects and superconductivity in CaC6. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 85, 184514-1-184514-8. - ISSN 1098-0121 [Disponibilità ristretta]
Web of Science: 11 - Scopus: 10
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Articolo di rivista Tortello, Mauro; Daghero, Dario; Ummarino, Giovanni; Stepanov, V.A.; Zhigadlo, N.D.; Karpinski, J.; Jiang, J.; Gonnelli, Renato (2012)
Point-contact Andreev-reflection spectroscopy in Fe-based superconductors: multi-gap superconductivity and strong electron-boson interaction. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 25, pp. 1297-1301. - ISSN 1557-1939 [Disponibilità ristretta]
Web of Science: 8 - Scopus: 7
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Articolo in atti di convegno Tortello M.; Daghero D.; Ummarino G.A.; Griveau J.-C.; Colineau E.; Eloirdi R.; Shick A.B.; Kolorenc J.; Lichtenstein A.I.; And Caciuffo R. (2012)
Strong-coupling d-wave superconductivity in PuCoGa5 probed by point contact spectroscopy. In: 2012 MRS Spring Meeting, San Francisco - California, April 9-13, 2012.
Web of Science: 22 - Scopus: 13

Articolo di rivista Daghero D.; Tortello M.; Ummarino G.A.; Griveau J.-C.; Colineau E.; Eloirdi R.; Shick A.B.; Kolorenc J.; Lichtenstein A.I.; Caciuffo R. (2012)
Strong-coupling d-wave superconductivity in PuCoGa5 probed by point-contact spectroscopy. In: NATURE COMMUNICATIONS, vol. 3, 786-1-786-8. - ISSN 2041-1723 [Disponibilità ristretta]
Web of Science: 22 - Scopus: 13
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Articolo in atti di convegno Tortello M.; Daghero D.; Ummarino G.A.; Griveau J.-C.; Colineau E.; Eloirdi R.; Shick A.B.; Kolorenc J.; Lichtenstein A.I.; And Caciuffo R. (2012)
Strong-coupling d-wave superconductivity in PuCoGa5 probed by point-contact spectroscopy. In: Plutonium Futures The Science 2012, University of Cambridge, UK, 15-20 July 2012.
Web of Science: 22 - Scopus: 13

2011

Articolo di rivista Daghero D.; Tortello M.; Ummarino G.A.; Gonnelli R.S. (2011)
Directional point-contact Andreev-reflection spectroscopy of Fe-based superconductors: Fermi surface topology, gap symmetry, and electron-boson interaction. In: REPORTS ON PROGRESS IN PHYSICS, vol. 74, 124509-1-124509-27. - ISSN 0034-4885 [Disponibilità ristretta]
Web of Science: 44 - Scopus: 46
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Articolo in atti di convegno R.S. Gonnelli; M. Tortello; D. Daghero; G.A. Ummarino; V.A. Stepanov; Z. Bukowski; N.D. Zhigadlo; J. Karpinski; J. Jiang; P. Reuvekamp; R.K. Kremer (2011)
Directional point-contact Andreev-reflection spectroscopy of Fe-based superconductors: Gap symmetry and Fermi surface topology. In: Superconductivity 100 years later: A computational Approach, Porto Conte, Alghero, Italy, 15-18th September 2011.
Web of Science: 44 - Scopus: 46

Articolo di rivista Ummarino G.A. (2011)
Multiband s± Eliashberg theory and temperature-dependent spin-resonance energy in iron pnictide superconductors. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 83, 092508-1-092508-4. - ISSN 1098-0121 [Disponibilità ristretta]
Web of Science: 20 - Scopus: 17
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Articolo in atti di convegno Tortello, M.; Daghero, D.; Ummarino, G.A.; Stepanov, V.A.; Zhigadlo, N.D.; Karpinski, J.; Jiang J.; Weiss, J.D.; Hellstrom, E.E.; Gonnelli, R.S. (2011)
Point-contact Andreev-reflection spectroscopy in Fe-based superconductors: Multi-gap superconductivity and strong electron-boson interaction. In: 8th International Conference on Stripes and High Tc Superconductivity STRIPES 11, Rome, Italy, July 10-16, 2011.

Articolo di rivista Ummarino G.A.; Daghero D.; Tortello M.; Gonnelli R.S. (2011)
Predictions of multiband s± strong-coupling Eliashberg theory compared to experimental data in iron pnictides. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 24 n. 1-2, pp. 247-253. - ISSN 1557-1939 [Disponibilità ristretta]
Web of Science: 7 - Scopus: 8
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Articolo in atti di convegno R.S. Gonnelli, M. Tortello, D. Daghero, G.A. Ummarino, V.A. Stepanov, Z. Bukowski, N.D. Zhigadlo, J. Karpinski, J. Jiang, P. Reuvekamp, R.K. Kremer (2011)
The order-parameter symmetry and the electron-boson interaction in Fe-based superconductors investigated by directional point-contact Andreev-reflection spectroscopy. In: E-MRS 2011 Fall Meeting - Symposium M, Warsaw, Poland, September 19 - 23, 2011. p. 21

Articolo in atti di convegno R.S. Gonnelli, M. Tortello, D. Daghero, G.A. Ummarino, V.A. Stepanov, Z. Bukowski, N.D. Zhigadlo, J. Karpinski, J. Jiang, P. Reuvekamp, R.K. Kremer (2011)
The symmetry of order parameter(s) in Fe-based superconductors: The point-contact Andreev-reflection approach. In: 8th International Conference on Stripes and High Tc Superconductivity STRIPES 11, Rome, Italy, July 10-16, 2011.

2010

Articolo di rivista Ummarino G.A.; Caciuffo R.; Chudo H.; Kambe S. (2010)
Energy scale of the electron-boson spectral function and superconductivity in NpPd5Al2. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 82, 104510-1-104510-7. - ISSN 1098-0121
Web of Science: 2 - Scopus: 2

Articolo in atti di convegno Gozzelino L.; Gerbaldo R.; Ghigo G.; Laviano F.; Lopardo G.; Mezzetti E.; Ummarino G.A.; Giunchi G.; Perini E.; Saglietti L.; Bassani E.; Minetti B. (2010)
Influence of nanoparticle doping on electronic properties of MgB2 bulk samples. In: 9th European Conference of Applied Superconductivity, Dresden (Germany), 13–17 September 2009. 012014-1-012014-12
Web of Science: 2 - Scopus: 1

Articolo di rivista Tortello M.; Daghero D.; Ummarino G.A.; Stepanov V.A.; Jiang J.; Weiss J.D.; Hellstrom E.E.; Gonnelli R.S. (2010)
Multigap Superconductivity and Strong Electron-Boson Coupling in Fe-Based Superconductors: A Point-Contact Andreev-Reflection Study of Ba(Fe(1-x)Co(x))(2)As(2) Single Crystals. In: PHYSICAL REVIEW LETTERS, vol. 105, 237002-1-237002-4. - ISSN 0031-9007
Web of Science: 48 - Scopus: 44

Articolo in atti di convegno R.S. Gonnelli, D. Daghero, M. Tortello, G.A. Ummarino, V.A. Stepanov, R.K. Kremer, J. Karpinski, N.D. Zhigadlo, Jianyi Jiang (2010)
Point-contact Andreev-reflection Spectroscopy and Electron-boson Coupling in Superconducting Pnictides. In: CIMTEC 2010, 5th Forum on New Materials, Montecatini Terme, Italy, June 13-18, 2010. p. 111

2009

Articolo di rivista Gonnelli, R.S.; Daghero, D.; Tortello, M.; Ummarino, G.A.; Stepanov, V.A.; Kim, J.S.; Kremer, R.K. (2009)
Coexistence of two order parameters and a pseudogaplike feature in the iron-based superconductor LaFeAsO1−xFx. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 79, 184526-1-184526-11. - ISSN 1098-0121 [Disponibilità ristretta]
Web of Science: 48 - Scopus: 49
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Articolo di rivista Daghero D; Ummarino G. A; Tortello M.; Delaude Debora; Gonnelli R. S; Stepanov V.A; Monni M; Palenzona A (2009)
Effect of Li-Al co-doping on the energy gaps of MgB2. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 22 n. 2, 025012-025020. - ISSN 0953-2048
Web of Science: 5 - Scopus: 5

Articolo di rivista Gozzelino L.; Gerbaldo R.; Ghigo G.; Laviano F.; Lopardo G.; Ummarino G.A.; Giunchi G.; Perini E.; Bassani E.; Agostino A.; Mezzetti E.; Minetti B. (2009)
Effects of annealing and nanoparticle doping on electrical properties of MgB2 bulks grown by reactive Mg liquid infiltration technique. In: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 19, pp. 3524-3528. - ISSN 1051-8223
Web of Science: 5 - Scopus: 5

Articolo in atti di convegno R.S. Gonnelli, D. Daghero, M. Tortello, D. Delaude, G.A. Ummarino, M. Omini, C. Portesi, E. Monticone, J. Moodera (2009)
Electric-field effect in normal-metal and MgB2 thin films on suspended SIN membranes. In: Progress in Applied Surface, Interface and Thin Film Science 2009, SURFINT-SREN II, Florence, Italy, November 16-19, 2009. pp. 23-26

Articolo di rivista Bonura M.; Agliolo Gallitto A.; Li Vigni M.; Ummarino G.A. (2009)
Field-induced suppression of the π-band superconductivity and magnetic hysteresis in the microwave surface resistance of MgB2 at temperatures near Tc. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 22, 055010-1-055010-10. - ISSN 0953-2048
Web of Science: 1 - Scopus: 1

Articolo di rivista Gozzelino L.; Minetti B.; Ummarino G.A.; Gerbaldo R.; Ghigo G.; Laviano F.; Lopardo G.; Giunchi G.; Perini E.; Mezzetti E. (2009)
Intraband scattering rate and electronic diffusivity study in MgB2 bulk samples. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 22, 065007-1-065007-8. - ISSN 0953-2048
Web of Science: 7 - Scopus: 7

Articolo di rivista Ummarino G.A. (2009)
Iron based layered compounds: the effect of negative interband coupling. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 22, pp. 603-607. - ISSN 1557-1939
Web of Science: 4 - Scopus: 3

Articolo di rivista Tortello M.; Daghero D.; Ummarino G.A.; Gonnelli R.S.; Stepanov V.A.; Kim J.S (2009)
Point-Contact Andreev-reflection Spectroscopy in the Fe-based superconductor LaFeAsO1-xFx. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 22, pp. 553-557. - ISSN 1557-1939
Web of Science: 3 - Scopus: 3

Articolo di rivista Gonnelli R.S.; Daghero D.; Tortello M.; Ummarino G.A.; Stepanov V.A.; Kremer R.K.; Kim J.S.; Zhigadlo N.D.; Karpinski J. (2009)
Point-contact Andreev-reflection spectroscopy in ReFeAsO1-xFx (Re = La, Sm): Possible evidence for two nodeless gaps. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 469, pp. 512-520. - ISSN 0921-4534
Web of Science: 45 - Scopus: 41

Articolo di rivista Ummarino G.A.; Magnani N.; Colineau E.; Griveau J.C.; Jutier F.; Rebizant J.; Wastin F.; Caciuffo R. (2009)
Quasiparticle density of states of self-irradiation-damaged PuCoGa(5) superconductor. In: PHYSICA. B, CONDENSED MATTER, vol. 404 n. 19, pp. 3213-3215. - ISSN 0921-4526
Web of Science: 1 - Scopus: 1

Articolo di rivista Ummarino G.A.; Tortello M.; Daghero D.; Gonnelli R.S. (2009)
Three-band s± Eliashberg theory and the superconducting gaps of iron pnictides. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 80, 172503-1-172503-4. - ISSN 1098-0121
Web of Science: 41

Articolo di rivista Gonnelli R.S.; Tortello M.; Daghero D.; Ummarino G.A.; Stepanov V.A.; Kim J.S. (2009)
Two-gap superconductivity in the Fe-1111 superconductor LaFeAsO1−xFx: A point-contact Andreev-reflection study. In: CENTRAL EUROPEAN JOURNAL OF PHYSICS, vol. 7 n. 2, pp. 251-256. - ISSN 1895-1082
Web of Science: 3 - Scopus: 4

Articolo di rivista Ummarino G.A.; Magnani N.; Griveau J.C.; Rebizant J.; Caciuffo R. (2009)
d-wave superconductive gap and related observables of PuCoGa5. In: JOURNAL OF NUCLEAR MATERIALS, vol. 385, pp. 4-7. - ISSN 0022-3115
Web of Science: 4 - Scopus: 4

Articolo di rivista Ummarino G.A. (2009)
The phenomenology of iron pnictides superconductors explained in the framework of s-wave three-band Eliashberg theory. In: ADVANCES IN CONDENSED MATTER PHYSICS, vol. 2010, pp. 1-6. - ISSN 1687-8108
Web of Science: 2 - Scopus: 1

2008

Articolo di rivista Gonnelli, R.S.; Daghero, D; Delaude, D; Tortello, M; Ummarino, G.A; Stepanov, V.A; Kim, J.S; Kremer, R.K; Sanna, A; Profeta, G; Massidda, S (2008)
Evidence for Gap Anisotropy in CaC6 from Directional Point-Contact Spectroscopy. In: PHYSICAL REVIEW LETTERS, vol. 100, 207004-1-207004-4. - ISSN 0031-9007 [Disponibilità ristretta]
Web of Science: 35 - Scopus: 33
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Articolo in atti di convegno Gonnelli R.S., Daghero D., Tortello M., Ummarino G.A., Stepanov V.A., Kim J.S., Kremer R.K. (2008)
Point-contact Andreev-reflection spectroscopy in LaFeAsO1-xFx: Coexistence of two order parameters and a pseudogap. In: International Conference on "FeAs High Tc Superconducting Multilayers and Related Phenomena" (STRIPES 2008), Roma, 9-13 dicembre 2008. p. 34

Articolo in atti di convegno Daghero D., Gonnelli R.S., Delaude D., Tortello M., Ummarino G.A., Stepanov V.A., Kim J.S., Kremer R.K., Karpinski J. (2008)
Point-contact Andreev-reflection spectroscopy in LaFeAsO_(1-x)F_(x) and SmFeAsO_(0.8)F_(0.2). In: International Workshop "Physics & Chemistry of FeAs-based Superconductors", Dresden, 27-29 ottobre 2009. p. 4

Articolo in atti di convegno R.S. Gonnelli, D. Daghero, M. Tortello, G.A. Ummarino, V.A. Stepanov, J.S. Kim, R.K. Kremer, J. Karpinski (2008)
Point-contact Andreev-reflection spectroscopy in novel Fe-based superconductors LaFeAsO1-xFx and SmFeAsO0.8F0.2. In: 6th international conference on Solid State Surfaces and Interfaces, SSSI 2008, Smolenice Castle, Slovakia, November 24-27, 2008.

Articolo di rivista Daghero D; Delaude Debora; Calzolari A; Tortello M; Ummarino G.A; Gonnelli R.S.; Stepanov V.A; Zhigadlo N.D; Katrych S; Karpinski J (2008)
Point-contact Andreev-reflection spectroscopy in segregation-free Mg1-xAlxB2 single crystals up to x = 0.32. In: JOURNAL OF PHYSICS. CONDENSED MATTER, vol. 20, 085225-1-085225-12. - ISSN 0953-8984
Web of Science: 15 - Scopus: 16

Articolo di rivista F. Jutier; Ummarino Ga; J.C. Griveau; F. Wastin; E. Colineau; J. Rebizant; N. Magnani And R. Caciuffo (2008)
Possible mechanism of superconductivity in PuCoGa5 probed by self-irradiation damage. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 77 n. 2, 024521-1-024521-5. - ISSN 1098-0121
Web of Science: 32 - Scopus: 31
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2007

Articolo di rivista R.S. Gonnelli; A. Calzolari; Daghero D.; D. Delaude; M. Tortello; G.A. Ummarino; V.A. Stepanov; N.D. Zhigadlo; J. Karpinski; P. Manfrinetti (2007)
Effect of Heavy Al Doping on MgB2: A Point-Contact Study of Crystals and Polycrystals. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 20, pp. 555-558. - ISSN 1557-1939
Web of Science: 3 - Scopus: 4

Articolo di rivista Ummarino G.A. (2007)
Effects of Magnetic Impurities on Two-Band Superconductor. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 20 n. 10.100, pp. 639-642. - ISSN 1557-1939
Web of Science: 9 - Scopus: 9

Articolo di rivista Ghigo G; Andreone D; Gerbaldo R; Gozzelino L; Laviano F; Lopardo G; Minetti B.; Monticone E; Ummarino G.A; Mezzetti E (2007)
Effects of disorder on the performance of magnesium diboride microwave resonators. In: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 17, pp. 3644-3647. - ISSN 1051-8223
Web of Science: 1 - Scopus: 1

Articolo in atti di convegno R.S. Gonnelli, A. Calzolari, D. Daghero, M. Tortello, G.A. Ummarino, V.A. Stepanov, C. Tarantini, P. Manfrinetti (2007)
Point-Contact Andreev-Reflection Spectroscopy in Neutron-Irradiated Mg^(11)B_2. In: APS March Meeting 2007, Denver, Colorado, 5-9 marzo 2007.

Articolo di rivista Daghero, D; Calzolari, A; Tortello, M; Ummarino, G A; Gonnelli, R.S.; Stepanov, V A; Zhigadlo, N; Rogacki, K; Karpinski, J (2007)
Point-Contact Spectroscopy in Mn-Doped MgB2 Single Crystals: Effects of Magnetic Impurities in a Two-Band Superconductor. In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 20 n. 7-8, pp. 523-526. - ISSN 1557-1939 [Disponibilità ristretta]
Web of Science: 1 - Scopus: 1
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Articolo di rivista Gonnelli R.S.; Daghero D; Ummarino G.A; Tortello M; Delaude D; Stepanov V.A; Karpinski J (2007)
Point-contact Andreev-reflection spectroscopy in MgB2: The role of substitutions. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 456, pp. 134-143. - ISSN 0921-4534
Web of Science: 17 - Scopus: 19

Articolo di rivista Daghero D.; Calzolari A; Delaude D; Gonnelli R.S; Tortello M; Ummarino G.A; Stepanov V.A; Zhigadlo N.D; Karpinski J; Putti M (2007)
Point-contact study of the role of non-magnetic impuritiesand disorder in the superconductivity of MgB2. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 460-462, pp. 975-976. - ISSN 0921-4534
Web of Science: 0 - Scopus: 0

Articolo di rivista E. Cappelluti; Ummarino G.A. (2007)
Strong-coupling properties of unbalanced Eliashberg superconductors. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 76, 104522-1-104522-9. - ISSN 1098-0121
Web of Science: 6 - Scopus: 6

2006

Articolo di rivista Calzolari A.; Daghero D.; Gonnelli R.S.; Ummarino G.A.; Stepanov V.A.; Masini R.; Maria Roberta Cimberle; Ferretti M. (2006)
Andreev-reflection measurements in RuSr2GdCu2O8. In: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 67, pp. 597-600. - ISSN 0022-3697
Web of Science: 3 - Scopus: 3

Articolo in atti di convegno R.S. Gonnelli, A. Calzolari, D. Daghero, D. Delaude, M. Tortello, G.A. Ummarino, V.A. Stepanov, N.D. Zhigadlo, J. Karpinski, P. Manfrinetti (2006)
Effect of heavy Al Doping on MgB2: a Point-Contact Study of Crystals and Polycrystals. In: 5th International Conference Stripes06, Rome, Italy, December 17-22, 2006.

Articolo di rivista Gonnelli, R.S.; Daghero, D; Ummarino, G.A; Calzolari, A; Tortello, M; Stepanov, V.A; Zhigadlo, N.D; Rogacki, K; Karpinski, J.; Bernardini, F.; Massidda, S. (2006)
Effect of magnetic impurities in a two-band superconductor: A point-contact study of Mn-substituted MgB2 single crystals. In: PHYSICAL REVIEW LETTERS, vol. 97 n. 3, 037001-1-037001-4. - ISSN 0031-9007
Web of Science: 27 - Scopus: 26
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Articolo di rivista Daghero D.; Gonnelli R.S.; Ummarino G.A.; Calzolari A.; Valeria Dellarocca; Stepanov V.A.; Kazakov S.M.; Jun J.; Karpinski J. (2006)
Effect of the magnetic field on the gaps of MgB2: A directional point-contact study. In: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 67 n. 1-3, pp. 424-427. - ISSN 0022-3697
Web of Science: 0 - Scopus: 0

Articolo di rivista G. Ghigo; Ummarino G.A; R. Gerbaldo; L. Gozzelino; F. Laviano; E. Mezzetti (2006)
Effects of disorder on the microwave properties of MgB2 polycrystalline films. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 74, 184518-1-184518-6. - ISSN 1098-0121 [Disponibilità ristretta]
Web of Science: 11 - Scopus: 11
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Articolo in atti di convegno D. Daghero; R.S. Gonnelli; A. Calzolari; Ummarino G.A.; M. Tortello; V.A. Stepanov; N.D. Zhigadlo; K. Rogacki; J. Karpinski; M. Putti (2006)
Point-Contact spectroscopy in doped and irradiated MgB2. In: CIMTEC 2006, ACIREALE, 2006. pp. 75-81

Articolo di rivista Daghero D; Calzolari A; Ummarino G. A; Tortello M; Gonnelli R.S.; Stepanov V.A; Tarantini C; Manfrinetti P; Lehmann E (2006)
Point-contact spectroscopy in neutron-irradiated Mg11B2. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 74, 174519-1-174519-11. - ISSN 1098-0121
Web of Science: 22 - Scopus: 23

Articolo di rivista R.S. Gonnelli; D. Daghero; A. Calzolari; Ummarino G.A.; M. Tortello; V.A. Stepanov; N.D. Zhigadlo; K. Rogacki; J. Karpinski; C. Portesi; E. Monticone; D. Mijatovic; D. Veldhuis; A. Brinkman (2006)
Recent achievements in MgB2 physics and applications:A large-area SQUID magnetometer and point-contact spectroscopy measurements. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 435, pp. 59-65. - ISSN 0921-4534
Web of Science: 2 - Scopus: 4

Articolo in atti di convegno Calzolari A; Daghero D; Gonnelli R.S.; Tortello M; Ummarino G.A; Stepanov V.A; Zhigadlo N.D; Rogacki K; Karpinski J; Bernardini F; Massidda S (2006)
The effect of magnetic impurities on the two-band superconducivity: A point-contact study of Mn-doped MgB2. In: SATT13, 13° Congresso Nazionale di Superconduttività, Convento dell' Annunziata Sestri Levante (GENOVA), March 29-31, 2006.

Articolo di rivista Gonnelli R.S.; Daghero D.; Ummarino G.A.; Calzolari A.; Valeria Dellarocca; Stepanov V.A.; Kazakov S.M.; Jun J.; Karpinski J. (2006)
A point-contact study of the superconducting gaps in Al-substituted and C-substituted MgB2 single crystals. In: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 67, pp. 360-364. - ISSN 0022-3697
Web of Science: 6 - Scopus: 10

2005

Articolo di rivista Karpinski J.; Zhigadlo N.D.; Schuck G.; Kazakov S.M.; Batlogg B.; Rogacki K.; Puzniak R.; Jun J.; Muller E.; Wagli P.; Gonnelli R.; Daghero D.; Ummarino G.A; Stepanov V.A. (2005)
Al substitution in MgB2 crystals: Influence on superconducting and structural properties. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 71, 174506-1-174506-15. - ISSN 1098-0121 [Disponibilità ristretta]
Web of Science: 84 - Scopus: 85
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Articolo di rivista Ummarino, G.A; Daghero, D.; Gonnelli, R.S.; Moudden, A.H (2005)
Carbon substitutions in MgB2 within the two-band Eliashberg theory. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 71 n. 13, 134511-1-134511-6. - ISSN 1098-0121 [Disponibilità ristretta]
Web of Science: 30 - Scopus: 32
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Articolo di rivista Gonnelli, R.S.; Daghero, D.; Calzolari, A.; Ummarino, G.A.; Dellarocca, V.; Stepanov, V.A.; Kazakov, S.M.; Zhigadlo, N.; Karpinski, J. (2005)
Evidence for Single-gap Superconductivity in Mg(B1-xCx)2 Single Crystals with x=0.132 from Point-Contact Spectroscopy. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 71 n. 6, 060503(R)-1-060503(R)-4. - ISSN 1098-0121
Web of Science: 60 - Scopus: 65
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Articolo di rivista Gonnelli R.S.; Daghero D; Ummarino G.A; Calzolari A; Tortello M; Stepanov V.A; Zhigadlo N; Kazakov S.M; Karpinski J (2005)
Evidence for one-gap superconductivity in Mg(B1−xCx)2 single crystals at x=0.132 by point-contact spectroscopy. In: JOURNAL OF SUPERCONDUCTIVITY, vol. 18, pp. 681-685. - ISSN 0896-1107
Web of Science: 3 - Scopus: 4

Articolo di rivista Ummarino G.A. (2005)
Pressure dependence of critical temperature in MgB2 and two bands Eliashberg theory. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 423, pp. 96-102. - ISSN 0921-4534
Web of Science: 9 - Scopus: 10

Articolo di rivista Ummarino G.A; Gonnelli R.S.; Bianconi A (2005)
Two-band Eliashberg theory in doped MgB2: Experimental Tc and superconductive gaps. In: JOURNAL OF SUPERCONDUCTIVITY, vol. 18, pp. 191-195. - ISSN 0896-1107
Web of Science: 4 - Scopus: 3

Articolo di rivista Daghero D.; Gonnelli R.S.; Calzolari A.; Ummarino G.A.; Dellarocca V.; Stepanov V.A.; Zhigadlo N.; Kazakov S.M.; Karpinski J. (2005)
The superconducting gaps of C-substituted and Al-substituted MgB2 single crystals by point-contact spectroscopy. In: PHYSICA STATUS SOLIDI C, vol. 2, pp. 1656-1661. - ISSN 1610-1634
Web of Science: 3 - Scopus: 5

2004

Articolo di rivista D. Daghero; R.S. Gonnelli; Ummarino G.A.; A. Calzolari; Valeria Dellarocca; V.A. Stepanov; V.B. Filippov; Y.B. Paderno (2004)
Andreev-reflection spectroscopy of the gap in ZrB12 single crystals. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 17 n. 5, S250-S254. - ISSN 0953-2048
Web of Science: 24 - Scopus: 29

Articolo di rivista Gonnelli R. S; Daghero D.; Calzolari A; Ummarino G.A; Dellarocca V; Stepanov V.A; Jun J; Kazakov S.M; Karpinski J (2004)
Directional point-contact spectroscopy of MgB2 single crystals in magnetic fields: two-band superconductivity and critical fields. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 408-410, pp. 796-797. - ISSN 0921-4534
Web of Science: 2 - Scopus: 3

Articolo in atti di convegno R.S. Gonnelli, D. Daghero, G.A. Ummarino, A. Calzolari, Valeria Dellarocca, V.A. Stepanov, J. Jun, S.M. Kazakov, J. Karpinski (2004)
Evidence for one-gap superconductivity in Mg(B1-xCx)2 single crystals at x=0.132 by point-contact spectroscopy. In: 4th International Conference on Nanoscale Heterogeneity and Quantum Phenomena in Complex Matter, Stripes 04, Rome, Italy, September 26 - October 2, 2004 .

Articolo di rivista Gonnelli, R.S.; Daghero, D.; Calzolari, A.; Ummarino, G.A.; Dellarocca, V.; Stepanov, V.A.; Jun, J.; Kazakov, S.M.; Karpinski, J. (2004)
Magnetic-field dependence of the gaps in a two-band superconductor: a point-contact study of MgB2 single crystals. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 69, 100504-1-100504-4. - ISSN 1098-0121 [Disponibilità ristretta]
Web of Science: 37 - Scopus: 40
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Articolo in atti di convegno Gonnelli R.S., Daghero D., Calzolari A., Ummarino G.A., Dellarocca V., Stepanov V.A., Kazakov S.M., Karpinski J., Portesi C., Monticone E., Ferrando V., Ferdeghini C. (2004)
Point-contact spectroscopy in MgB2: From fundamental physics to thin-film characterization. In: 6th European Conference on Applied Superconductivity, Sorrento, Italy, 14-18 Settembre. pp. 157-164
Web of Science: 10 - Scopus: 12

Articolo di rivista R.S. Gonnelli; D. Daghero; A. Calzolari; Ummarino G.A.; V. Dellarocca; V.A. Stepanov; S.M. Kazakov; J. Karpinski; C. Portesi; E. Monticone; V. Ferrando; C. Ferdeghini (2004)
Point-contact spectroscopy in MgB2: from fundamental physics to thin-film characterization. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 17 n. 5, S93-S100. - ISSN 0953-2048
Web of Science: 11 - Scopus: 12

Articolo in atti di convegno Ummarino G.A; Calzolari A; Daghero D.; Gonnelli R. S; Stepanov V.A; Masini R; Cimberle M.R (2004)
Point-contact study of gap amplitude and symmetry in RuSr2GdCu2O8. In: 6th European Conference on Applied Superconductivity, Sorrento, 14 -18 settembre 2003. pp. 1146-1153

Articolo di rivista Ummarino G.A.; Gonnelli R.S.; Massidda S.; Bianconi A. (2004)
Two-band Eliashberg equations and the experimental T-c of the diboride Mg1-xAlxB2. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 407 n. 2-3, pp. 121-127. - ISSN 0921-4534
Web of Science: 62 - Scopus: 60

Articolo di rivista Daghero D.; Gonnelli R.S.; Ummarino G.A.; Dolgov O.V.; Kortus J.; Golubov A.A.; Shulga S.V. (2004)
The determination of the electron-phonon interaction from tunneling data in the two-band superconductor MgB2. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 408-410, pp. 353-354. - ISSN 0921-4534
Web of Science: 3 - Scopus: 3

2003

Articolo di rivista G.A. Ummarino; Gonnelli R.S.; O.V. Dolgov; S.V. Shulga (2003)
Electron-phonon spectral function and two-band model in tunneling measurement on MgB2. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 17, pp. 643-648. - ISSN 0217-9792
Web of Science: 0 - Scopus: 0

Articolo di rivista Dolgov O.V; Gonnelli R.S; Ummarino G.A.; Golubov A.A; Shulga S.V; Kortus J (2003)
Extraction of the electron-phonon interaction from tunneling data in the multigap superconductor MgB2. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 68, 132503-1-132507-4. - ISSN 1098-0121
Web of Science: 34 - Scopus: 34

Articolo di rivista Gonnelli R.S.; D. Daghero; G.A. Ummarino; V.A. Stepanov; J. Jun; S.M. Kazakov; J. Karpinski (2003)
Independent determination of the two gaps by directional point-contact spectroscopy in MgB2 single crystals. In: SUPERCONDUCTOR SCIENCE & TECHNOLOGY, vol. 16 n. 2, pp. 171-175. - ISSN 0953-2048
Web of Science: 12 - Scopus: 12

Articolo di rivista D. Daghero; R.S. Gonnelli; Ummarino G.A.; V.A. Stepanov; J. Jun; S.M. Kazakov; J. Karpinski. (2003)
Point-contact spectroscopy in MgB2 single crystals in magnetic field. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 385 n. 1-2, pp. 255-263. - ISSN 0921-4534
Web of Science: 25 - Scopus: 27

Articolo di rivista D. Daghero; Gonnelli R.S.; G.A. Ummarino; V.A. Stepanov (2003)
Possible d+id scenario in La_(2-x)Sr_xCuO_4 by Andreev reflection measurements. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 17 n. 4-6, pp. 649-654. - ISSN 0217-9792
Web of Science: 2 - Scopus: 3

2002

Articolo di rivista Gonnelli, R.S.; Daghero, D.; Ummarino, G.A.; Stepanov, V.A.; Jun, J.; Kazakov, S.M.; Karpinski, J. (2002)
Direct Evidence for Two-Band Superconductivity in MgB2 Single Crystals from Directional Point-Contact Spectroscopy in Magnetic Fields. In: PHYSICAL REVIEW LETTERS, vol. 89 n. 24, 247004-1-247004-4. - ISSN 0031-9007
Web of Science: 181 - Scopus: 193
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Articolo di rivista Gonnelli R.; A. Calzolari; D. Daghero; L. Natale; Ummarino G.A.; V.A. Stepanov; M. Ferretti (2002)
Doping dependence of the superconducting gap by Andreev reflection in Au/La2-xSrxCuO4 point-contact junctions. In: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 63 n. 12, pp. 2369-2373. - ISSN 0022-3697
Web of Science: 1 - Scopus: 2

Articolo di rivista G.A. Ummarino; Gonnelli R.S.; D. Daghero (2002)
Eliashberg equations and the phenomenology of field-effect-doped C60. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 16 n. 11-12, pp. 1539-1546. - ISSN 0217-9792
Web of Science: 2 - Scopus: 2

Articolo di rivista Gonnelli R.S.; Ummarino G.A.; Daghero D.; Calzolari A.; Stepanov V.A. (2002)
Gap measurements in MgB2 break-junction and point-contact heterostructures: test of the two-band models. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 16 n. 11-12, pp. 1553-1561. - ISSN 0217-9792
Web of Science: 3 - Scopus: 4

Articolo di rivista Gonnelli R.; A. Calzolari; D. Daghero; G.A. Ummarino; V.A. Stepanov; P. Fino; G. Giunchi; S. Ceresara; G. Ripamonti (2002)
Temperature and junction-type dependency of Andreev reflection in MgB2. In: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 63 n. 12, pp. 2319-2323. - ISSN 0022-3697
Web of Science: 7 - Scopus: 8

Articolo di rivista Ummarino G.A.; Gonnelli R.S.; Daghero D. (2002)
Tunneling conductance of SIN junctions with different gap symmetries and non-magnetic impurities by direct solution of real-axis Eliashberg equations. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 377 n. 3, pp. 292-303. - ISSN 0921-4534
Web of Science: 5 - Scopus: 5

Articolo di rivista Ummarino G.A.; Gonnelli R.S. (2002)
The possible explanation of electric-field-doped C60 phenomenology in the framework of Eliashberg theory. In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, vol. 66, 104514-1-104514-6. - ISSN 1098-0121
Web of Science: 3 - Scopus: 3

2001

Articolo di rivista Gonnelli R. S; Calzolari A; Daghero D.; Natale L; Ummarino G.A; Stepanov V.A; Ferretti M (2001)
Evidence for pseudogap and phase-coherence gap separation by Andreev reflection experiments in Au/La2-xSrxCuO4 point-contact junctions. In: THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, vol. 22, pp. 411-414. - ISSN 1434-6028
Web of Science: 17 - Scopus: 19

Articolo in atti di convegno R.S. Gonnelli; A. Calzolari; D. Daghero; G.A. Ummarino; V.A. Stepanov; G. Giunchi; Fino P. (2001)
Josephson effect and Andreev reflection measurements in MgB2 break- junction and point- contact heterostructures. In: International Symposium on Artificial and Natural Nanostructures (ANN01), Roma, 10-12 dicembre 2001. p. 23

Articolo di rivista Gonnelli, R.S.; Calzolari, A.; Daghero, D.; Ummarino, G.A.; Stepanov, V.A.; Giunchi, G.; Ceresara, S.; Ripamonti, G. (2001)
Josephson effect in MgB2 break junctions. In: PHYSICAL REVIEW LETTERS, vol. 87 n. 9, 097001-1-097001-4. - ISSN 0031-9007
Web of Science: 64 - Scopus: 69
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Altro Gonnelli R.; A. Calzolari; D. Daghero; Ummarino G.A.; V.A. Stepanov; G. Giunchi (2001)
Josephson effect in MgB2 break junctions. Istituto Nazionale per la Fisica della Materia (INFM), Genova.

Altro Ummarino Ga (2001)
Possible alterations of the gravitational field in a superconductor. .
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Articolo di rivista E. Cappelluti; C. Grimaldi; L. Pietronero; S. Strassler; Ummarino G.A. (2001)
Superconductivity of Rb3C60: breakdown of the Migdal-Eliashberg theory. In: THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS, vol. 21, pp. 383-391. - ISSN 1434-6028
Web of Science: 23 - Scopus: 27

2000

Articolo di rivista R.S. Gonnelli; V.A. Stepanov; A. Morello; Ummarino G.A.; G. Behr; G. Graw; S.V. Shulga; S.L. Drechsler (2000)
Electron-phonon coupling origin of the resistivity in YNi2B2C single crystals. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 14, pp. 2840-2845. - ISSN 0217-9792
Web of Science: 5 - Scopus: 5

Articolo di rivista Daghero, D.; Gonnelli, R.S.; Morello, A.; Ummarino, G.A.; Natale, L.; Stepanov, V.A.; Licci, F.; Ubertalli, G. (2000)
Possible evidence of charge-stripe ordering in the ab-plane resistivity of strongly underdoped La_(2-x)Sr_(x)CuO_4 single crystals. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 14 n. 25-27, pp. 2779-2784. - ISSN 0217-9792 [Disponibilità ristretta]
Web of Science: 0 - Scopus: 2
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Capitolo di libro Gonnelli R.S.; Ummarino G. A; Stepanov V. A (2000)
The Quasi-Particle Density of States of Optimally Doped Bi 2212: Break-Junction vs. Vacuum-Tunneling Measurements. In: Stripes and Related Phenomena / A. BIANCONI; N.L. SAINI; EDITORS. Kluwer Academic / Plenum Publishers, NEW YORK, pp. 377-383. ISBN 9780306464195

Articolo di rivista G.A. Ummarino; Gonnelli R.S.; D. Daghero (2000)
Real-axis solution of Eliashberg equations in various order-parameter symmetries and the tunneling conductance of optimally-doped HTCS. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 14 n. 25-27, pp. 2944-2949. - ISSN 0217-9792
Web of Science: 0 - Scopus: 0

Articolo di rivista Gonnelli R.S.; Stepanov V.A.; Morello A.; Ummarino G.A.; Behr G.; Graw G.; Shulga S.V.; Drechsler S.L. (2000)
Resistivity and electron-phonon coupling in YNi2B2C single crystals. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 341-348, pp. 1957-1958. - ISSN 0921-4534
Web of Science: 6 - Scopus: 6

Articolo di rivista Ummarino G.A., Gonnelli R.S., Daghero D. (2000)
Solution of real-axis Eliashberg equations with different pair symmetries and tunneling density of states. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 341-348 n. 1, pp. 299-300. - ISSN 0921-4534
Web of Science: 1 - Scopus: 1

Articolo di rivista Gonnelli R. S; A. Calzolari; Daghero D.; L. Natale; G.A. Ummarino; V.A. Stepanov; M. Ferretti (2000)
Temperature and doping dependence of Andreev reflection in Au/La_(2-x)Sr_(x)CuO_4 point-contact junctions. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 14 n. 29-31, pp. 3472-3479. - ISSN 0217-9792 [Disponibilità ristretta]
Web of Science: 2 - Scopus: 3
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Articolo di rivista R.S. Gonnelli; V.A. Stepanov; A. Morello; Ummarino G.A.; D. Daghero; L. Natale; Francesca Licci; G. Ubertalli (2000)
ab-plane resistivity and possible charge stripe ordering in strongly underdoped La2-xSrxCuO4 single crystals. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 341-348, pp. 1779-1780. - ISSN 0921-4534
Web of Science: 3 - Scopus: 1

Capitolo di libro Ummarino G. A; Gonnelli R.S. (2000)
d-Wave Solution of Eliashberg Equations and Tunneling Density of States in Optimally-Doped High-Tc Superconductors. In: Stripes and Related Phenomena / A. BIANCONI; N.L. SAINI; EDITORS. Kluwer Academic / Plenum Publishers, NEW YORK, pp. 407-412. ISBN 9780306464195

Articolo di rivista G.A. Ummarino; Gonnelli R.S. (2000)
s- and d-wave solution of Eliashberg equations with finite bandwidth. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 341-348, pp. 295-296. - ISSN 0921-4534
Web of Science: 4 - Scopus: 4

1999

Articolo di rivista Gonnelli R.S.; G.A. Ummarino; V.A. Stepanov (1999)
Eliashberg equations, pair symmetry and tunneling density of states in high-Tc layered superconductors. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 317-318, pp. 378-382. - ISSN 0921-4534
Scopus: 2

Articolo di rivista Ummarino G.A.; R.S. Gonnelli; C. Bravi; Masumi Inoue (1999)
Pair symmetry and degree of gap depression at S-I interfaces in HTS Josephson junctions. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 13, pp. 1301-1306. - ISSN 0217-9792
Web of Science: 0 - Scopus: 0

Articolo di rivista Ummarino G.A.; Gonnelli R.S. (1999)
Real-axis direct solution of the d-wave Eliashberg equations and the tunneling density of states in optimally doped Bi2Sr2CaCu2O8+x. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 328, pp. 189-194. - ISSN 0921-4534
Web of Science: 12 - Scopus: 11

Articolo di rivista Ummarino G.A.; R.S. Gonnelli (1999)
Some consequences of the breakdown of Migdal's Theorem in high-Tc superconductors. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 317-318, pp. 524-527. - ISSN 0921-4534
Web of Science: 1 - Scopus: 1

Altro Gonnelli R.S.; Stepanov V.A; Morello A; Ummarino G.A; Licci Francesca; Ubertalli G (1999)
The ab-plane resistivity of strongly underdoped and Pt-substituded LaSrCuO single crystals. .

Articolo di rivista G.A. Ummarino; Gonnelli R.S. (1999)
The effects of the breakdown of Migdal's Theorem in various superconductors. In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 13, pp. 1215-1220. - ISSN 0217-9792
Web of Science: 1 - Scopus: 1

1998

Altro Gonnelli R.S.; Ummarino G.A; Stepanov V.A (1998)
Pseudogap features in the d-wave strong electron-boson density of the states of high-Tc cuprate superconductors. .

Articolo di rivista R.S. Gonnelli; Ummarino G.A.; V.A. Stepanov (1998)
Reproducible tunneling determination of the electron-phonon spectral function in optimally-doped Bi-2212 single crystal break-junctions. In: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 59/ 10-12, pp. 2058-2061. - ISSN 0022-3697
Web of Science: 5 - Scopus: 4

1997

Articolo di rivista Ummarino G. A; Gonnelli R.S. (1997)
Breakdown of Migdal's theorem and intensity of electron-phonon coupling in high-Tc superconductors. In: PHYSICAL REVIEW. B, CONDENSED MATTER, vol. 56 n. 22, pp. 14279-14282. - ISSN 0163-1829
Web of Science: 18 - Scopus: 16

Articolo di rivista R.S. Gonnelli; Ummarino G.A.; V.A. Stepanov (1997)
Determination of the tunneling electron-phonon spectral function in high-T-c superconductors with energy dependence of the normal density of states. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 275, pp. 162-171. - ISSN 0921-4534
Web of Science: 40 - Scopus: 36

Articolo di rivista Ummarino G.A; Gonnelli R.S.; Stepanov V.A (1997)
Eliashberg equations with energy dependence of the normal density of states and quasiparticle tunneling in high-Tc superconductors. In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS, vol. 19, pp. 1215-1221. - ISSN 0392-6737
Web of Science: 0 - Scopus: 0

Articolo di rivista Ummarino G.A.; R.S. Gonnelli; V.A. Stepanov (1997)
Energy dependence of the normal density of states and of electron-phonon spectral function in the quasiparticle tunneling in high-Tc superconductors. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 282-287, pp. 1501-1502. - ISSN 0921-4534
Web of Science: 4 - Scopus: 2

Articolo di rivista Gonnelli R.S.; Ummarino G.A; Bravi C; Stepanov V.A (1997)
Influence of surface-depressed order parameter and pair symmetry in the critical current of high-Tc Josephson junctions. In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS, vol. 19, pp. 1207-1214. - ISSN 0392-6737
Web of Science: 0 - Scopus: 1

Articolo di rivista Ummarino G.A.; R.S. Gonnelli; C. Bravi; V.A. Stepanov (1997)
Intrinsic surface depression of the order parameter under mixed (s+id)-wave pair symmetry and its effect on the critical current of high-Tc SIS Josephson junctions. In: JOURNAL OF SUPERCONDUCTIVITY, vol. 10, pp. 657-662. - ISSN 0896-1107
Web of Science: 1 - Scopus: 0

Articolo di rivista R.S. Gonnelli; D. Puttero; Ummarino G.A.; C. Bravi (1997)
Surface depression of the order parameter and pair symmetry in the Josephson critical current of high-Tc SIS' and SIS junctions. In: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 7, pp. 3331-3334. - ISSN 1051-8223
Web of Science: 0 - Scopus: 0

Articolo di rivista Gonnelli R.S.; Ummarino G. A; And Stepanov V. A (1997)
Tunneling spectroscopy in Bi2Sr2CaCu2O8+x single-crystal break junctions: reproducible determination of the Eliashberg function and role of the breakdown of Migdal's theorem. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 282-287, pp. 1473-1474. - ISSN 0921-4534
Web of Science: 5 - Scopus: 4

Articolo di rivista Gonnelli R.S.; Ummarino G.A.; Bravi C.; Stepanov V.A. (1997)
The role of the pair symmetry and intrinsic surface depression of the order parameter on the critical current of high-Tc SIS and SIS' Josephson junctions. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 282-287, pp. 2403-2404. - ISSN 0921-4534
Web of Science: 1 - Scopus: 1

1996

Altro Gonnelli R.S.; Pescarolo M; Ummarino G.A; Stepanov V.A (1996)
Determination of the electron-phonon spectral function from tunneling measurements in Bi2Sr2CaCu2O8+x single-crystal break junctions. .

Articolo di rivista Gonnelli R.S.; Ummarino G.A (1996)
Surface order-parameter depression and pair symmetry in high-Tc Josephson junctions. In: MODERN PHYSICS LETTERS B, vol. 10, pp. 753-763. - ISSN 0217-9849
Web of Science: 3 - Scopus: 3

Articolo di rivista Gonnelli R.; D. Puttero; Ummarino G.A. (1996)
The intrinsic determinants of the critical current in SIS' and SIS high-Tc Josephson junctions. In: APPLIED PHYSICS LETTERS, vol. 68, pp. 2433-2435. - ISSN 0003-6951
Web of Science: 10 - Scopus: 9

1995

Articolo di rivista Gonnelli R.; D. Puttero; Ummarino G.A.; V.A. Stepanov; F. Licci. (1995)
Influence of a surface-depressed order parameter on the Josephson critical current in Bi2Sr2CaCu2O8+x nonhysteretic break junctions. In: PHYSICAL REVIEW. B, CONDENSED MATTER, vol. 51, pp. 12782-12785. - ISSN 0163-1829
Web of Science: 9 - Scopus: 7

Articolo di rivista R.S. Gonnelli; D. Puttero; Ummarino G.A.; V.A. Stepanov (1995)
Temperature dependence of the Josephson critical current in Bi2Sr2CaCu2O8+x break junctions. In: IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 5, pp. 2539-2542. - ISSN 1051-8223
Web of Science: 0 - Scopus: 0

1994

Articolo di rivista Gonnelli R.S.; Dolgov O.V; Ummarino G.A; Vedeneev S.I (1994)
Comparison of the Eliashberg functions determined from point-contact and break-junction tunneling experiments in Bi2Sr2CaCu2O8+x. In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS, vol. 16, pp. 1903-1907. - ISSN 0392-6737
Web of Science: 1 - Scopus: 1

Articolo di rivista V. Basso; M. Lo Bue; A. Magni; Ummarino G.A.; G. Bertotti (1994)
Experimental study and theoretical interpretation of hysteresis loops and Henkel plots in soft magnetics materials. In: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 133, pp. 111-114. - ISSN 0304-8853
Scopus: 4

Articolo di rivista Gonnelli R.S.; Andreone D; Ummarino G.A (1994)
Inelastic tunneling and electron-phonon coupling in Bi2Sr2CaCu2O8+x. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 235-240, pp. 1865-1866. - ISSN 0921-4534
Web of Science: 0 - Scopus: 0

Articolo di rivista Gonnelli R.S.; Vedeneev S.I; Dolgov O.V; Ummarino G.A (1994)
Influence of lifetime broadening in the determination of the Eliashberg function from break-junction tunneling data in Bi2Sr2CaCu2O8+x single crystals. In: PHYSICA. C, SUPERCONDUCTIVITY, vol. 235-240, pp. 1861-1862. - ISSN 0921-4534
Web of Science: 16 - Scopus: 13

Articolo di rivista Gonnelli R.S.; Puttero D; Ummarino G.A; Stepanov V.A (1994)
The role of the surface depression of the pair potential on the Josephson and quasi-particle tunneling in high-Tc superconductors. In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS, vol. 16, pp. 1979-1985. - ISSN 0392-6737
Web of Science: 0 - Scopus: 0

1991

Articolo di rivista Gasparini M.; Ummarino G.A. (1991)
Adiabatic perturbations and minimal size of the De Sitter vacuum. In: PHYSICS LETTERS. SECTION B, vol. 266, pp. 275-279. - ISSN 0370-2693
Scopus: 6

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