Ballistic spin interferometer using the Rasfaba effect [8]

Takaaki Koga, Junsaku Nitta, Marc Van Veenhuizen

Research output: Contribution to journalArticlepeer-review

84 Citations (Scopus)


We propose a ballistic spin interferometer using a square loop (SL) geometry, where an incident electron wave packet is split into a pair of partial waves by a "hypothetical" beam splitter. These electron partial waves, then, follow the SL path in the clockwise and counterclockwise directions, respectively, so that they interfere, with each other at the incident point, retaining the spin degree of freedom. We find that the backscattering probability of an incident electron can be largely modulated by varying the magnitude of the Rashba spin-orbit coupling constant α. We propose to make the proposed spin interferometry experiment using an artificial nanostructure fabricated in, for example, In0.52Al 0.48A.s/In0.53Ga0.47As/In0.52Al 0.48As quantum wells.

Original languageEnglish
Article number161302
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number16
Publication statusPublished - 2004 Oct
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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