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

被引：3
作者：
Zheng, Jian-Long [1 ]
Zhai, Feng [1 ,2 ]
机构：
[1] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Peoples R China
[2] Zhejiang Normal Univ, Zhejiang Inst Photoelect, Jinhua 321004, Peoples R China
来源：
CHINESE PHYSICS B | 2024年 / 33卷 / 01期
基金：
中国国家自然科学基金;
关键词：
valleytronics; graphene; strain; valley-Zeeman effect; plasmons; 72.80.Vp; 73.20.Mf; 73.43.Cd; 85.35.-p; 2-DIMENSIONAL ELECTRON-GAS; STRAINED GRAPHENE; TRANSPORT; VALVE; FIELD;
D O I：
10.1088/1674-1056/acfd17
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
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.
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收藏
页数：15
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