Valley transport in Kekulé structures of graphene

doi:10.1088/1674-1056/acf9e3

中国物理B ›› 2024, Vol. 33 ›› Issue (1): 17801-17801.doi: 10.1088/1674-1056/acf9e3

所属专题： SPECIAL TOPIC — Valleytronics

Valley transport in Kekulé structures of graphene

Juan-Juan Wang(王娟娟)^1,† and Jun Wang(汪军)^2,‡

1 Department of Physics, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China;
2 Department of Physics, Southeast University, Nanjing 210096, China

收稿日期:2023-06-22 修回日期:2023-09-04 接受日期:2023-09-15 出版日期:2023-12-13 发布日期:2023-12-29
通讯作者: Juan-Juan Wang, Jun Wang E-mail:juanjuanwang@njau.edu.cn;jwang@seu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12174051 and 12304069).

Valley transport in Kekulé structures of graphene

Juan-Juan Wang(王娟娟)^1,† and Jun Wang(汪军)^2,‡

1 Department of Physics, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China;
2 Department of Physics, Southeast University, Nanjing 210096, China

Received:2023-06-22 Revised:2023-09-04 Accepted:2023-09-15 Online:2023-12-13 Published:2023-12-29
Contact: Juan-Juan Wang, Jun Wang E-mail:juanjuanwang@njau.edu.cn;jwang@seu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12174051 and 12304069).

摘要/Abstract

摘要： Valleytronics is an emergent discipline in condensed matter physics and offers a new way to encode and manipulate information based on the valley degree of freedom in materials. Among the various materials being studied, Kekulé distorted graphene has emerged as a promising material for valleytronics applications. Graphene can be artificially distorted to form the Kekulé structures rendering the valley-related interaction. In this work, we review the recent progress of research on Kekulé structures of graphene and focus on the modified electronic bands due to different Kekulé distortions as well as their effects on the transport properties of electrons. We systematically discuss how the valley-related interaction in the Kekulé structures was used to control and affect the valley transport including the valley generation, manipulation, and detection. This article summarizes the current challenges and prospects for further research on Kekulé distorted graphene and its potential applications in valleytronics.

关键词: graphene, Y-shaped Kekulé (Y-Kek) lattice distortion structure, O-Kekulé (O-Kek) structure, valley current

Abstract: Valleytronics is an emergent discipline in condensed matter physics and offers a new way to encode and manipulate information based on the valley degree of freedom in materials. Among the various materials being studied, Kekulé distorted graphene has emerged as a promising material for valleytronics applications. Graphene can be artificially distorted to form the Kekulé structures rendering the valley-related interaction. In this work, we review the recent progress of research on Kekulé structures of graphene and focus on the modified electronic bands due to different Kekulé distortions as well as their effects on the transport properties of electrons. We systematically discuss how the valley-related interaction in the Kekulé structures was used to control and affect the valley transport including the valley generation, manipulation, and detection. This article summarizes the current challenges and prospects for further research on Kekulé distorted graphene and its potential applications in valleytronics.

Key words: graphene, Y-shaped Kekulé (Y-Kek) lattice distortion structure, O-Kekulé (O-Kek) structure, valley current

中图分类号: (Electro-optical effects)

78.20.Jq

71.70.Fk (Strain-induced splitting) 72.80.Vp (Electronic transport in graphene)

Juan-Juan Wang(王娟娟) and Jun Wang(汪军). Valley transport in Kekulé structures of graphene[J]. 中国物理B, 2024, 33(1): 17801-17801.

Juan-Juan Wang(王娟娟) and Jun Wang(汪军). Valley transport in Kekulé structures of graphene[J]. Chin. Phys. B, 2024, 33(1): 17801-17801.

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Valley transport in Kekulé structures of graphene

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