Density of states in a superconductor carrying a supercurrent

Details Density of states in a superconductor carrying a supercurrent Density of states in a superconductor carrying a supercurrent

2003-02-07

arxiv.org/abs/cond-mat/0302153v1

Phys. Rev. Lett. 90, 127001 (2003)

Physics

Condensed Matter

Superconductivity

To be published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.90.127001

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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