Intrinsic Spin Hall Effect in s-wave Superconducting State: Analysis of Rashba Model

Autor:	Kontani, H., Goryo, J., Hirashima, D. S.
Rok vydání:	2008
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. Lett. 102, 086602 (2009)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.102.086602
Popis:	A general expression for the spin Hall conductivity (SHC) in the s-wave superconducting state at finite temperatures is derived. Based on the expression, we study the SHC in a two-dimensional electron gas model in the presence of Rashba spin-orbit interaction (SOI). The SHC is zero in the normal state, whereas it takes a large negative value as soon as the superconductivity occurs, due to the change in the quasiparticle contributions. Since this remarkable behavior is independent of the strength of the SOI, it will be widely observed in thin films of superconductors with surface-induced Rashba SOI, or in various non-centrosymmetric superconductors. Comment: 4 pages, to be published in Phys. Rev. Lett
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0806.4237 Zobrazit plný text záznamu View this record from Arxiv