Rashba spin-orbit coupling probed by the weak antilocalization analysis in InAlAs/InGaAs/InAlAs quantum wells as a function of quantum well asymmetry

Takaaki Koga, Junsaku Nitta, Tatsushi Akazaki, Hideaki Takayanagi

Research output: Contribution to journalArticlepeer-review

422 Citations (Scopus)

Abstract

The values of the Rashba spin-orbit coupling constant α for MOCVD-grown In0.52Al0.48As/In0.53Ga0.47As/- In0.52Al0.48As quantum wells were studied using weak antilocalization analysis as a function of the structural inversion asymmetry (SIA) of the quantum well (QW). A clear transition from positive to negative magnetoresistance near B=0 T was observed by changing the SIA of the QWs. Furthermore, a quantitative agreement was found between theoretical and experimental values of α as a function of both the SIA and/or the sheet carrier density of the QWs.

Original languageEnglish
Article number046801
Pages (from-to)046801/1-046801/4
JournalPhysical Review Letters
Volume89
Issue number4
DOIs
Publication statusPublished - 2002 Jul 22
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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