中国物理B ›› 2024, Vol. 33 ›› Issue (1): 17203-17203.doi: 10.1088/1674-1056/acfd17

所属专题: SPECIAL TOPIC — Valleytronics

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Valley filtering and valley-polarized collective modes in bulk graphene monolayers

Jian-Long Zheng(郑建龙)1 and Feng Zhai(翟峰)1,2,†   

  1. 1 Department of Physics, Zhejiang Normal University, Jinhua 321004, China;
    2 Zhejiang Institute of Photoelectronics, Zhejiang Normal University, Jinhua 321004, China
  • 收稿日期:2023-06-04 修回日期:2023-09-21 接受日期:2023-09-26 出版日期:2023-12-13 发布日期:2023-12-29
  • 通讯作者: Feng Zhai E-mail:fzhai@zjnu.cn
  • 基金资助:
    We express our sincere appreciation to our collaborators for their invaluable contributions to the related works presented in this review. This work is supported by the National Natural Science Foundation of China (Grant Nos. 11774314 and 12274370) and Scientific Research Start-up Fund of Zhejiang Normal University (Grant No. YS304222903).

Valley filtering and valley-polarized collective modes in bulk graphene monolayers

Jian-Long Zheng(郑建龙)1 and Feng Zhai(翟峰)1,2,†   

  1. 1 Department of Physics, Zhejiang Normal University, Jinhua 321004, China;
    2 Zhejiang Institute of Photoelectronics, Zhejiang Normal University, Jinhua 321004, China
  • Received:2023-06-04 Revised:2023-09-21 Accepted:2023-09-26 Online:2023-12-13 Published:2023-12-29
  • Contact: Feng Zhai E-mail:fzhai@zjnu.cn
  • Supported by:
    We express our sincere appreciation to our collaborators for their invaluable contributions to the related works presented in this review. This work is supported by the National Natural Science Foundation of China (Grant Nos. 11774314 and 12274370) and Scientific Research Start-up Fund of Zhejiang Normal University (Grant No. YS304222903).

摘要: The presence of two sublattices in hexagonal graphene brings two energetically degenerate extremes in the conduction and valence bands, which are identified by the valley quantum number. Recently, this valley degree of freedom has been suggested to encode and process information, which develops a new carbon-based electronics named graphene valleytronics. In this topical review, we present and discuss valley-related transport properties in bulk graphene monolayers, which are due to strain-induced pseudomagnetic fields and associated vector potential, sublattice-stagger potential, and the valley-Zeeman effect. These valley-related interactions can be utilized to obtain valley filtering, valley spatial separation, valley-resolved guiding modes, and valley-polarized collective modes such as edge or surface plasmons. The present challenges and the perspectives on graphene valleytronics are also provided in this review.

关键词: valleytronics, graphene, strain, valley-Zeeman effect, plasmons

Abstract: The presence of two sublattices in hexagonal graphene brings two energetically degenerate extremes in the conduction and valence bands, which are identified by the valley quantum number. Recently, this valley degree of freedom has been suggested to encode and process information, which develops a new carbon-based electronics named graphene valleytronics. In this topical review, we present and discuss valley-related transport properties in bulk graphene monolayers, which are due to strain-induced pseudomagnetic fields and associated vector potential, sublattice-stagger potential, and the valley-Zeeman effect. These valley-related interactions can be utilized to obtain valley filtering, valley spatial separation, valley-resolved guiding modes, and valley-polarized collective modes such as edge or surface plasmons. The present challenges and the perspectives on graphene valleytronics are also provided in this review.

Key words: valleytronics, graphene, strain, valley-Zeeman effect, plasmons

中图分类号:  (Electronic transport in graphene)

  • 72.80.Vp
73.20.Mf (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)) 73.43.Cd (Theory and modeling) 85.35.-p (Nanoelectronic devices)