Orbital ac spin-hall effect in the hopping regime

O. Entin-Wohlman, A. Aharony, Y. M. Galperin, V. I. Kozub, V. Vinokur

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The Rashba and Dresselhaus spin-orbit interactions are both shown to yield the low temperature spin-Hall effect for strongly localized electrons coupled to phonons. A frequency-dependent electric field E(ω) generates a spin-polarization current, normal to E, due to interference of hopping paths. At zero temperature the corresponding spin-Hall conductivity is real and is proportional to ω2. At nonzero temperatures the coupling to the phonons yields an imaginary term proportional to ω. The interference also yields persistent spin currents at thermal equilibrium, at E=0. The contributions from the Dresselhaus and Rashba interactions to the interference oppose each other.

Original languageEnglish
Article number086603
JournalPhysical Review Letters
Volume95
Issue number8
DOIs
StatePublished - 19 Aug 2005

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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