Intrinsic Superspin Hall Current
Abstract
We discover an intrinsic superspin Hall current: an injected charge supercurrent in a Josephson junction containing heavy normal metals and a ferromagnet generates a transverse spin supercurrent. There is no accompanying dissipation of energy, in contrast to the conventional spin Hall effect. The physical origin of the effect is an antisymmetric spin density induced among transverse modes near the interface of the superconductor arising due to the coexistence of -wave and conventional -wave superconducting correlations with a belonging phase mismatch. Our predictions can be tested in hybrid structures including thin heavy metal layers combined with strong ferromagnets and ordinary -wave superconductors.
Cite
@article{arxiv.1704.07381,
title = {Intrinsic Superspin Hall Current},
author = {Jacob Linder and Morten Amundsen and Vetle Risinggård},
journal= {arXiv preprint arXiv:1704.07381},
year = {2017}
}
Comments
8 pages, 6 figures. Included a section on the microscopic origin of the effect in addition to a derivation and physical explanation of how a non-unitary state where singlet and triplet pairing coexist produce a net magnetization