Communications in Theoretical Physics ›› 2021, Vol. 73 ›› Issue (12): 125704. doi: 10.1088/1572-9494/ac3327

• Condensed Matter Theory • Previous Articles    

Manipulation of a temporal electron-spin splitter via a δ-potential in an embedded magnetic-electric-barrier microstructure

Gui-Xiang Liu,Ge Tang,Jian-Lin Liu,Qing-Meng Guo(),Shuai-Quan Yang,Shi-Shi Xie   

  1. College of Science, Shaoyang University, Shaoyang 422000, China
  • Received: 2021-08-05 Revised: 2021-10-25 Accepted: 2021-10-26 Published: 2021-12-01
  • Contact: Qing-Meng Guo E-mail:qimegu@126.com

Abstract:

We theoretically explore the manipulation of a temporal electron-spin splitter by a δ-potential in an embedded magnetic-electric-barrier microstructure (EMEBM), which is constructed by patterning a ferromagnetic stripe and a Schottky-metal stripe on the top and bottom of an InAs/AlxIn1−xAs heterostructure, respectively. Spin polarization of the dwell time remains, even though a δ-potential is inserted by atomic-layer doping. Both the magnitude and sign of the spin-polarized dwell time can be manipulated by changing the weight or position of the δ-potential. Thus, a structurally controllable temporal electron-spin splitter can be obtained for spintronics device applications.

Key words: embedded magnetic-electric-barrier microstructure (EMEBM), δ-potential, dwell time, spin polarization, manipulable temporal spin splitter