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.
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