Charged Vortices in High Temperature Superconductors
D. I. Khomskii, A. Freimuth
DOI 10.1103/PhysRevLett.75.1384 · Physical Review Letters
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Abstract
It is argued that in the mixed state of a type II superconductor, because of the difference of the chemical potential in a superconducting versus normal state, the vortex cores may become charged. The extra electron density is estimated. The extra charge contributes to the dynamics of the vortices; in particular, it can explain in certain cases the change of the sign of the Hall coefficient below Tc frequently observed in the high temperature superconductors.
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