Spin superconductor in ferromagnetic graphene
Mesoscale and Nanoscale Physics
2015-05-20 v2
Abstract
We show a spin superconductor (SSC) in ferromagnetic graphene as the counterpart to the charge superconductor, in which a spin-polarized electron-hole pair plays the role of the spin `Cooper pair' with a neutral charge. We present a BCS-type theory for the SSC. With the `London-type equations' of the super-spin-current density, we show the existence of an electric `Meissner effect' against a spatial varying electric field. We further study a SSC/normal conductor/SSC junction and predict a spin-current Josephson effect.
Keywords
Cite
@article{arxiv.1012.4528,
title = {Spin superconductor in ferromagnetic graphene},
author = {Qing-feng Sun and Zhao-tan Jiang and Yue Yu and X. C. Xie},
journal= {arXiv preprint arXiv:1012.4528},
year = {2015}
}
Comments
6 pages, 4 figures