Spin textures and Larmor precession of holes modulated by the spin-orbit coupling confined in the two-dimensional SixGe1-x mixed-alloy quantum well system

Tatsuki Tojo, Kosei Tsuruta, Yuzuru Takahashi, Kyozaburo Takeda

研究成果: Article

抜粋

We theoretically study the spin textures of holes confined in the two-dimensional (2D) SixGe1-x quantum well (QW) system. We particularly focus on the spin-orbit interaction (SOI) caused by the bulk-inversion-asymmetry (BIA) and explore the effective magnetic field (EMF) generated by the combination of the SOI couplings. For the study of the semiconductor mixed-alloy (MA) system, we propose the extended k · p perturbation approach including possible perturbation terms crossing with the SOI couplings up to the second order ones. We then study the distribution and orientation of the EMF and investigate how the EMF changes the spin textures of the heavy-mass holes (HHs), light-mass holes (LHs) and separated holes (SHs), respectively. Finally, we study the Larmor spin precession of these holes having the characteristic spin textures driven by the SOI couplings.

元の言語English
記事番号095302
ジャーナルJournal of Physics Condensed Matter
32
発行部数9
DOI
出版物ステータスPublished - 2020

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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