Spin interference controlled by electric field: Ensemble average effect on AAS and AB oscillation amplitudes

Junsaku Nitta, Tobias Bergsten

Research output: Contribution to journalArticlepeer-review

Abstract

Time reversal symmetric Al'tshuler-Aronov-Spivak (AAS) oscillations are measured in an array of InGaAs mesoscopic loops. We confirm that gate voltage dependence of h/2e period oscillations is due to spin interference from the effect of ensemble average on the AAS and Aharonov-Bohm (AB) amplitudes. This spin interference is based on the time reversal Aharonov-Casher (AC) effect. The AC interference oscillations are controlled over several periods. This result shows evidence for electrical manipulation of the spin precession angle in an InGaAs two-dimensional electron gas channel. We control the precession rate in a precise and predictable way with an electrostatic gate.

Original languageEnglish
Pages (from-to)973-977
Number of pages5
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume40
Issue number5
DOIs
Publication statusPublished - 2008 Mar 1

Keywords

  • Aharonov-Casher effect
  • Al'tshuler-Aronov-Spivak effect
  • Rashba spin-orbit interaction
  • Spin interference

ASJC Scopus subject areas

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

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