Spin-orbit coupling induced spin polarisation in both magnetically and electrically modulated semiconductor heterostructure. (3rd May 2020)

• Record Type: Journal Article
• Authors: Liu, Xu-Hui; Tan, Ming; Gong, Yan-Jun; Peng, Li
• Is Part Of: Philosophical magazine letters. Volume 100:Number 5(2020)
• Page Start: 213
• Page End: 223
• Publication Date: 2020-05-03
• Subjects: Magnetically and electrically modulated semiconductor heterostructure -- spin-orbit coupling -- spin polarisation -- spin filter -- spin injection‌; Condensed matter -- Periodicals; Physics -- Periodicals; Solid state physics -- Periodicals; Physique -- Périodiques; 530.41
• DOI: 10.1080/09500839.2020.1741045
• Languages: English
• ISSNs: 0950-0839

Abstract

ABSTRACT: Spin polarisation is investigated for electrons in a spin–orbit coupled, magnetically and electrically modulated semiconductor heterostructure, which can be fabricated by patterning a ferromagnetic stripe and a Schottky-metal stripe in the parallel configuration on the surface of GaAs/Alx Ga1-x As heterostructure. It is shown that spin polarisation comes mainly from spin–orbit coupling. It is also shown that spin polarisation can be modified by Rashba or Dresselhaus spin-orbit coupling, leading to a controllable spin filter and benefiting future spintronics devices.