Flux quantization for a vortex in two-gap superconductor
arXiv:cond-mat/0604645 · doi:10.1103/PhysRevB.74.052501
Abstract
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 2π/g, not 4 π/g. For the U(1) version of this model, the flux is quantized in units of 2 πα/g where 0 < α< 1. The parameter αdepends on the masses and concentrations of the Cooper pairs in the two condensates.
7 pages