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Special Issue:
SPECIAL TOPIC — Valleytronics
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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 |
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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.
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Received: 22 June 2023
Revised: 04 September 2023
Accepted manuscript online: 15 September 2023
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PACS:
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78.20.Jq
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(Electro-optical effects)
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71.70.Fk
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(Strain-induced splitting)
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72.80.Vp
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(Electronic transport in graphene)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12174051 and 12304069). |
Corresponding Authors:
Juan-Juan Wang, Jun Wang
E-mail: juanjuanwang@njau.edu.cn;jwang@seu.edu.cn
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Cite this article:
Juan-Juan Wang(王娟娟) and Jun Wang(汪军) Valley transport in Kekulé structures of graphene 2024 Chin. Phys. B 33 017801
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