Evidence for a Minigap in YBCO Grain Boundary Josephson Junctions

被引：12

作者：

Lucignano, P. ^{[1
,2
]}

Stornaiuolo, D. ^{[1
]}

Tafuri, F. ^{[1
,3
]}

Altshuler, B. L. ^{[4
]}

Tagliacozzo, A. ^{[1
,5
]}

机构：

[1] CNR SPIN, I-80126 Naples, Italy

[2] Sch Adv Int Studies, SISSA, I-34151 Trieste, Italy

[3] Seconda Univ Napoli, Dipartimento Ingn Informaz, I-81031 Aversa, CE, Italy

[4] Columbia Univ, Dept Phys, New York, NY 10027 USA

[5] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 14期

关键词：

Current voltage characteristics - Josephson junction devices - Barium compounds - Copper compounds - Grain boundaries;

D O I：

10.1103/PhysRevLett.105.147001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Self-assembled YBaCuO diffusive grain boundary submicron Josephson junctions offer a realization of a special regime of the proximity effect, where normal state coherence prevails on the superconducting coherence in the barrier region. Resistance oscillations from the current-voltage characteristic encode mesoscopic information on the junction and more specifically on the minigap induced in the barrier. Their persistence at large voltages is evidence of the long lifetime of the antinodal (high energy) quasiparticles.

引用

页数：4

共 32 条

[1] Inelastic scattering time for conductance fluctuations [J].

Aleiner, IL ;

Blanter, YM .

PHYSICAL REVIEW B, 2002, 65 (11) :1153171-11531710

[2]

AVERIN DV, 1992, NATO ADV SCI I B-PHY, V294, P217

[3] Quantum dynamics of a d-wave Josephson junction [J].

Bauch, T ;

Lindström, T ;

Tafuri, F ;

Rotoli, G ;

Delsing, P ;

Claeson, T ;

Lombardi, F .

SCIENCE, 2006, 311 (5757) :57-60

[4] Macroscopic quantum tunneling in d-wave YBa2Cu3O7-δ josephson junctions -: art. no. 087003 [J].

Bauch, T ;

Lombardi, F ;

Tafuri, F ;

Barone, A ;

Rotoli, G ;

Delsing, P ;

Claeson, T .

PHYSICAL REVIEW LETTERS, 2005, 94 (08)

[5] Quasiclassical Green's function approach to mesoscopic superconductivity [J].

Belzig, W ;

Wilhelm, FK ;

Bruder, C ;

Schön, G ;

Zaikin, AD .

SUPERLATTICES AND MICROSTRUCTURES, 1999, 25 (5-6) :1251-1288

[6] Resistive transport in a mesoscopic proximity superconductor [J].

Charlat, P ;

Courtois, H ;

Gandit, P ;

Mailly, D ;

Volkov, AF ;

Pannetier, B .

CZECHOSLOVAK JOURNAL OF PHYSICS, 1996, 46 :3107-3114

[7] Josephson critical current in a long mesoscopic S-N-S junction -: art. no. 064502 [J].

Dubos, P ;

Courtois, H ;

Pannetier, B ;

Wilhelm, FK ;

Zaikin, AD ;

Schön, G .

PHYSICAL REVIEW B, 2001, 63 (06)

[8] Diffusion of nonequilibrium quasi-particles in a cuprate superconductor [J].

Gedik, N ;

Orenstein, J ;

Liang, RX ;

Bonn, DA ;

Hardy, WN .

SCIENCE, 2003, 300 (5624) :1410-1412

[9] THEORETICAL INVESTIGATION OF JOSEPHSON TUNNEL-JUNCTIONS WITH SPATIALLY INHOMOGENEOUS SUPERCONDUCTING ELECTRODES [J].

GOLUBOV, AA ;

KUPRIYANOV, MY .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1988, 70 (1-2) :83-130

[10] Superconducting proximity effect probed on a mesoscopic length scale [J].

Gueron, S ;

Pothier, H ;

Birge, NO ;

Esteve, D ;

Devoret, MH .

PHYSICAL REVIEW LETTERS, 1996, 77 (14) :3025-3028

← 1 2 3 4 →