An investigation of tunable spin-orbit interactions in front-gated In0.75Ga0.25As/In0.75Al0.25As heterojunctions

Yuuki Sato, Shin ichiro Gozu, Tomohiro Kita, Syoji Yamada

研究成果: Article

3 引用 (Scopus)

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We investigated zero-field spin-splitting in normal-type In0.75Ga0.25As/In0.75Al0.25As heterostructure by magnetoresistance measurements at 1.5K. The maximum value of spin-orbit interaction parameter, αzero, obtained here is 32×10-12eVm. We also confirmed a tuning of αzero by applying gate biases. On the other hand, we observed no beat oscillation when the In0.75Ga0.25As well width decreased from 30 to 10nm. These results suggested that interface contribution related to the asymmetry of wave function penetration into the barriers could be enhanced in our heterojunction.

元の言語English
ページ(範囲)77-80
ページ数4
ジャーナルPhysica E: Low-Dimensional Systems and Nanostructures
10
発行部数1-3
DOI
出版物ステータスPublished - 2001 5 1

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ASJC Scopus subject areas

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

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