Spin Hall effect and spin transfer in a disordered Rashba model

D. N. Sheng, L. Sheng, Z. Y. Weng, F. D.M. Haldane

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Based on numerical study of the Rashba model, we show that the spin Hall conductance remains finite in the presence of disorder up to a characteristic length scale, beyond which it vanishes exponentially with the system size. We further perform a Laughlin's gauge experiment numerically and find that all energy levels cannot cross each other during an adiabatic insertion of the flux in accordance with the general level repulsion rule. It results in zero spin transfer between two edges of the sample as each state always evolves back after the insertion of one flux quantum in contrast to the quantum Hall effect. It implies that the intrinsic spin Hall effect vanishes with the turn-on of disorder.

Original languageEnglish (US)
Article number153307
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number15
DOIs
StatePublished - Oct 15 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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