Theoretical investigations of spin splittings in asymmetric AlSb/InAs/GaSb heterostructures and the possibility of electric field induced magnetization

X. Cartoixà, D. Z.Y. Ting, E. S. Daniel, T. C. McGill

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

We use the effective bond orbital model method to examine the spin splitting due to the Rashba effect in AlSb/InAs/GaSb asymmetric heterostructures. We find for the resulting two-dimensional electron gas (2DEG) under study that large theoretical values of the Bychkov-Rashba coefficients in the range of 30 × 10-10 to 50 × 10-10 eV · cm can be achieved. Finally, we present a phenomenon that might lead to a direct observation of the Rashba effect. We derive an expression, valid in the diffusive limit, for the spin polarization of the current resulting from a bias parallel to the plane of the quantum well.

Original languageEnglish (US)
Pages (from-to)309-319
Number of pages11
JournalSuperlattices and Microstructures
Volume30
Issue number6
DOIs
StatePublished - Jan 1 2001

Keywords

  • 2DEG
  • AlSb
  • Asymmetric
  • GaSb
  • Heterostructure
  • InAs
  • Rashba
  • Spin splitting
  • Two-dimensional electron gas

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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