Spin polarization of half-quantum vortex in systems with equal spin pairing
Superconductivity
2015-05-13 v1
Abstract
We present a variational analysis for a half-quantum vortex (HQV) in the equal-spin-pairing superfluid state which, under suitable conditions, is believed to be realized in Sr2RuO4 and 3He-A. Our approach is based on a description of the HQV in terms of a BCS-like wave function with a spin-dependent boost. We predict a novel feature: the HQV, if stable, should be accompanied by a non-zero spin polarization. Such a spin polarization would exist in addition to the one induced by the Zeeman coupling to the external field and hence may serve as an indicator in experimental search for HQV.
Cite
@article{arxiv.0905.2631,
title = {Spin polarization of half-quantum vortex in systems with equal spin pairing},
author = {Victor Vakaryuk and Anthony J. Leggett},
journal= {arXiv preprint arXiv:0905.2631},
year = {2015}
}
Comments
4 pages