Nonmagnetic control of spin transport in InGaAs quantum wells

Takaaki Koga, Junsaku Nitta, Supriyo Datta

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


We have studied the Rashba constant values α in the In0.52Al0.48As/In0.53Ga0.47As quantum wells (QW), as a function of the degree of the structural inversion asymmetry (SIA), using the weak antilocalization analysis. We control the SIA of the QWs both by the specific sample design and by the applied gate voltage. The deduced α values are in a quantitative agreement with the theoretical values obtained in the k · p-type calculation. We, then, propose a novel spin-filter device solely based on the Rashba effect as an example of the devices that utilize the Rashba spin-orbit coupling effect.

Original languageEnglish
Pages (from-to)161-162
Number of pages2
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number1-3
Publication statusPublished - 2003 May
Externally publishedYes
Event23rd International Conference on Low Temperature Physics - Hiroshima, Japan
Duration: 2002 Aug 202002 Aug 27


  • InGaAs/InAlAs
  • Rashba spin-orbit Coupling
  • Spin filter
  • Spintronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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