中国物理B ›› 2023, Vol. 32 ›› Issue (10): 107306-107306.doi: 10.1088/1674-1056/acc809

所属专题: SPECIAL TOPIC — Valleytronics

• • 上一篇    下一篇

Perspectives of spin-valley locking devices

Lingling Tao(陶玲玲)   

  1. School of Physics, Harbin Institute of Technology, Harbin 150001, China
  • 收稿日期:2023-02-16 修回日期:2023-03-16 接受日期:2023-03-28 出版日期:2023-09-21 发布日期:2023-09-22
  • 通讯作者: Lingling Tao E-mail:lltao@hit.edu.cn
  • 基金资助:
    This work is supported by the Fundamental Research Funds for the Central Universities (Grant No. FRFCU5710053421) and the National Natural Science Foundation of China (Grant No. 12274102).

Perspectives of spin-valley locking devices

Lingling Tao(陶玲玲)   

  1. School of Physics, Harbin Institute of Technology, Harbin 150001, China
  • Received:2023-02-16 Revised:2023-03-16 Accepted:2023-03-28 Online:2023-09-21 Published:2023-09-22
  • Contact: Lingling Tao E-mail:lltao@hit.edu.cn
  • Supported by:
    This work is supported by the Fundamental Research Funds for the Central Universities (Grant No. FRFCU5710053421) and the National Natural Science Foundation of China (Grant No. 12274102).

摘要: Valleytronics is an emerging field of research which utilizes the valley degree of freedom to encode information. However, it is technically nontrivial to produce a stable valley polarization and to achieve efficient control and manipulation of valleys. Spin-valley locking refers to the coupling between spin and valley degrees of freedom in the materials with large spin-orbit coupling (SOC) and enables the manipulation of valleys indirectly through controlling spins. Here, we review the recent advances in spin-valley locking physics and outline possible device implications. In particular, we focus on the spin-valley locking induced by SOC and external electric field in certain two-dimensional materials with inversion symmetry and demonstrate the intriguing switchable valley-spin polarization, which can be utilized to design the promising electronic devices, namely, valley-spin valves and logic gates.

关键词: spin-valley locking, spintronics, valleytronics, spin-orbit coupling

Abstract: Valleytronics is an emerging field of research which utilizes the valley degree of freedom to encode information. However, it is technically nontrivial to produce a stable valley polarization and to achieve efficient control and manipulation of valleys. Spin-valley locking refers to the coupling between spin and valley degrees of freedom in the materials with large spin-orbit coupling (SOC) and enables the manipulation of valleys indirectly through controlling spins. Here, we review the recent advances in spin-valley locking physics and outline possible device implications. In particular, we focus on the spin-valley locking induced by SOC and external electric field in certain two-dimensional materials with inversion symmetry and demonstrate the intriguing switchable valley-spin polarization, which can be utilized to design the promising electronic devices, namely, valley-spin valves and logic gates.

Key words: spin-valley locking, spintronics, valleytronics, spin-orbit coupling

中图分类号:  (Other topics in electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)

  • 73.90.+f
85.75.-d (Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields) 71.70.Ej (Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect) 73.63.-b (Electronic transport in nanoscale materials and structures)