Density of states in a superconductor carrying a supercurrent

被引：125

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 [J].

Belzig, W ;

Wilhelm, FK ;

Bruder, C ;

Schön, G ;

Zaikin, AD .

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

[2] The spectral conductance of a proximity superconductor and the reentrance effect [J].

Courtois, H ;

Charlat, P ;

Gandit, P ;

Mailly, D ;

Pannetier, B .

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 [J].

Dubos, P ;

Courtois, H ;

Pannetier, B ;

Wilhelm, FK ;

Zaikin, AD ;

Schön, G .

PHYSICAL REVIEW B, 2001, 63 (06)

[4] 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

[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 [J].

LEVINE, JL .

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 [J].

NAHUM, M ;

EILES, TM ;

MARTINIS, JM .

APPLIED PHYSICS LETTERS, 1994, 65 (24) :3123-3125

[10] Andreev reflection and proximity effect [J].

Pannetier, B ;

Courtois, H .

JOURNAL OF LOW TEMPERATURE PHYSICS, 2000, 118 (5-6) :599-615

← 1 2 →