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

作　　者：郑建龙 翟峰 Jian-Long Zheng;Feng Zhai(Department of Physics,Zhejiang Normal University,Jinhua 321004,China;Zhejiang Institute of Photoelectronics,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]Department of Physics,Zhejiang Normal University,Jinhua 321004,China [2]Zhejiang Institute of Photoelectronics,Zhejiang Normal University,Jinhua 321004,China

出　　处：《Chinese Physics B》2024年第1期1-15,共15页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.11774314 and 12274370);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 

分 类 号：O469[理学—凝聚态物理]