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Transport property of inhomogeneous strained graphene |
| Bing-Lan Wu(吴冰兰)1, Qiang Wei(魏强)2, Zhi-Qiang Zhang(张智强)1,†, and Hua Jiang(江华)1,3,‡ |
| 1 School of Physics and Technology, Soochow University, Suzhou 215006, China; 2 State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China; 3 Institute for Advanced Study, Soochow University, Suzhou 215006, China |
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Abstract In analogy to real magnetic field, the pseudo-magnetic field (PMF) induced by inhomogeneous strain can also form the Landau levels and edge states. In this paper, the transport properties of graphene under inhomogeneous strain are studied. We find that the Landau levels have non-zero group velocity, and construct one-dimensional conducting channels. In addition, the edge states and the Landau level states in PMF are both fragile under disorder. We also confirm that the backscattering of these states could be suppressed by applying a real magnetic filed (MF). Therefore, the transmission coefficient for each conducting channel can be manipulated by adjusting the MF strength, which indicates the application of switching devices.
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Received: 14 November 2020
Revised: 01 January 2021
Accepted manuscript online: 07 February 2021
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PACS:
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05.50.+q
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(Lattice theory and statistics)
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03.65.Vf
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(Phases: geometric; dynamic or topological)
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| Fund: Project supported by the National Basic Research Program of China (Grant No. 2019YFA0308403) and the National Natural Science Foundation of China (Grant No. 11822407). |
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Corresponding Authors:
†Corresponding author. E-mail: zqzhang2018@stu.suda.edu.cn ‡Corresponding author. E-mail: jianghuaphy@suda.edu.cn
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Cite this article:
Bing-Lan Wu(吴冰兰), Qiang Wei(魏强), Zhi-Qiang Zhang(张智强), and Hua Jiang(江华) Transport property of inhomogeneous strained graphene 2021 Chin. Phys. B 30 030504
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