Flux quantization for a vortex in two-gap superconductor

Details Flux quantization for a vortex in two-gap superconductor Flux quantization for a vortex in two-gap superconductor

2006-04-27

arxiv.org/abs/cond-mat/0604645v1

Physics

Condensed Matter

Superconductivity

7 pages

Scientific paper

10.1103/PhysRevB.74.052501

Contrary to recent theoretical prediction, we show that the magnetic flux of
a vortex in SU(2) model of two-gap superconductor is quantized in units of
2\pi/g, not 4 \pi/g. For the U(1) version of this model, the flux is quantized
in units of 2 \pi\alpha/g where 0 < \alpha < 1. The parameter \alpha depends on
the masses and concentrations of the Cooper pairs in the two condensates.

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