1. Spin-orbit-coupling induced electron-spin polarization in magnetically and electrically confined semiconductor microstructure
- Author
-
Qing-Meng Guo, Shuai-Quan Yang, Ying-jie Qin, Mao-Wang Lu, and Shi-Shi Xie
- Subjects
Zeeman effect ,Materials science ,Spintronics ,Condensed matter physics ,Spin polarization ,Electron-spin polarization ,Physics ,QC1-999 ,General Physics and Astronomy ,Electron ,Spin–orbit interaction ,Polarization (waves) ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Zeeman interaction ,Controllable electron-spin filter ,symbols.namesake ,Condensed Matter::Materials Science ,Strain engineering ,Electric field ,symbols ,Condensed Matter::Strongly Correlated Electrons ,Spin-orbit coupling ,Magnetically and electrically confined semiconductor microstructure - Abstract
We theoretically investigate spin polarization for electrons in magnetically and electrically confined semiconductor microstructure, which is constructed by patterning a ferromagnetic stripe and a Schottky-metal stripe on top and bottom of GaAs/AlxGa1-xAs heterostructure, respectively. Both Zeeman interaction and spin–orbit coupling are taken into account; however, electron-spin polarization comes mainly from the latter due to a small effective g-factor for GaAs. Besides, both magnitude and sign of spin polarization can be manipulated by changing interfacial confining electric field or strain engineering, resulting in a tunable electron-spin filter for spintronics device applications.
- Published
- 2021