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Density of states in a superconductor carrying a supercurrent

A. Anthore·H. Pothier·D. Esteve
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Abstract

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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A. Anthore, H. Pothier, D. Esteve. 2003-02-07. Density of states in a superconductor carrying a supercurrent. https://doi.org/10.1103/physrevlett.90.127001

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