Density of states in a superconductor carrying a supercurrent

被引：123

作者：

Anthore, A ^{[1
]}

Pothier, H ^{[1
]}

Esteve, D ^{[1
]}

机构：

[1] CEA Saclay, Serv Phys Etat Condense, Direct Sci Mat, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.90.127001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the tunneling density of states (DOS) in a superconductor carrying a supercurrent or exposed to an external magnetic field. The pair correlations are weakened by the supercurrent, leading to a modification of the DOS and to a reduction of the gap. As predicted by the theory of superconductivity in diffusive metals, we find that this effect is similar to that of an external magnetic field.

引用

页数：4

共 15 条

[1] Quasiclassical Green's function approach to mesoscopic superconductivity
Belzig, W
Wilhelm, FK
Bruder, C
Schön, G
Zaikin, AD
[J]. SUPERLATTICES AND MICROSTRUCTURES, 1999, 25 (5-6) : 1251 - 1288
[2] The spectral conductance of a proximity superconductor and the reentrance effect
Courtois, H
Charlat, P
Gandit, P
Mailly, D
Pannetier, B
[J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1999, 116 (3-4) : 187 - 213
[3] Josephson critical current in a long mesoscopic S-N-S junction -: art. no. 064502
Dubos, P
Courtois, H
Pannetier, B
Wilhelm, FK
Zaikin, AD
Schön, G
[J]. PHYSICAL REVIEW B, 2001, 63 (06)
[4] Superconducting proximity effect probed on a mesoscopic length scale
Gueron, S
Pothier, H
Birge, NO
Esteve, D
Devoret, MH
[J]. PHYSICAL REVIEW LETTERS, 1996, 77 (14) : 3025 - 3028
[5] Ingold G.-L., 1992, SINGLE CHARGE TUNNEL
[6] DENSITY OF STATES OF A SHORT-MEAN-FREE-PATH SUPERCONDUCTOR IN A MAGNETIC FIELD BY ELECTRON TUNNELING
LEVINE, JL
[J]. PHYSICAL REVIEW, 1967, 155 (02): : 373 - &
[7] Maki K., 1969, Superconductivity, vol.2, P1035
[8] MITESCU CD, 1966, THESIS CALTECH
[9] ELECTRONIC MICROREFRIGERATOR BASED ON A NORMAL-INSULATOR-SUPERCONDUCTOR TUNNEL JUNCTION
NAHUM, M
EILES, TM
MARTINIS, JM
[J]. APPLIED PHYSICS LETTERS, 1994, 65 (24) : 3123 - 3125
[10] Andreev reflection and proximity effect
Pannetier, B
Courtois, H
[J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 2000, 118 (5-6) : 599 - 615

← 1 2 →