Spin Current in p-wave Superconducting Rings

Details Spin Current in p-wave Superconducting Rings Spin Current in p-wave Superconducting Rings

2005-04-18

arxiv.org/abs/cond-mat/0504419v2

Physical Review B 72, 092508 (2005).

Physics

Condensed Matter

Superconductivity

4pages

Scientific paper

10.1103/PhysRevB.72.092508

A formula of the spin current in mesoscopic superconductors is derived from the mean-field theory of superconductivity. The spin flow is generated by the spatial fluctuations of $\vec{d}$ which represents a spin state of spin-triplet superconductors. We discuss a possibility of the circulating spin current in isolated p-wave superconducting rings at the zero magnetic field. The direction of the spin current depends on topological numbers which characterize the spatial configuration of $\vec{d}$ on the ring.

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