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Density of States in a Superconductor Carrying a Supercurrent

A. Anthore, H. Pothier, D. Esteve

DOI 10.1103/PhysRevLett.90.127001 · Physical Review Letters

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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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FormulaReported Tc (K)Pressure (GPa)Type
Al

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—Pressure not reportedunknown

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