Experimental realization of a ballistic spin interferometer based on the Rashba effect using a nanolithographically defined square loop array

Takaaki Koga, Yoshiaki Sekine, Junsaku Nitta

研究成果: Article査読

86 被引用数 (Scopus)

抄録

We succeeded in observing gate-controlled electron spin interference in nanolithographically defined square loop arrays that were fabricated in In0.52 Al0.48 As In0.53 Ga0.47 As In0.52 Al0.48 As quantum wells (QWs). In this experiment, we demonstrated electron spin precession in ballistic channels within the QW that is caused by the Rashba effect. It turned out that the spin precession angle θ was gate controllable by more than 0.75π for a length of 1.5 μm. Thus, the demonstration of the large controllability of θ by the applied gate voltage was carried out in a more direct way using spin interference of an electron wave function than the conventional beating analysis of the Shubnikov-de Haas oscillations.

本文言語English
論文番号041302
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
74
4
DOI
出版ステータスPublished - 2006

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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