Transport property of inhomogeneous strained graphene

doi:10.1088/1674-1056/abe3e3

中国物理B ›› 2021, Vol. 30 ›› Issue (3): 30504-.doi: 10.1088/1674-1056/abe3e3

收稿日期:2020-11-14 修回日期:2021-01-01 接受日期:2021-02-07 出版日期:2021-02-22 发布日期:2021-02-22

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

Received:2020-11-14 Revised:2021-01-01 Accepted:2021-02-07 Online:2021-02-22 Published:2021-02-22
Contact: ^†Corresponding author. E-mail: zqzhang2018@stu.suda.edu.cn ^‡Corresponding author. E-mail: jianghuaphy@suda.edu.cn
Supported by:
Project supported by the National Basic Research Program of China (Grant No. 2019YFA0308403) and the National Natural Science Foundation of China (Grant No. 11822407).

摘要/Abstract

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.

Key words: disorder effect, pseudo-magnetic field, strain, transport properties

中图分类号: (Lattice theory and statistics)

05.50.+q

03.65.Vf (Phases: geometric; dynamic or topological)

. [J]. 中国物理B, 2021, 30(3): 30504-.

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[J]. Chin. Phys. B, 2021, 30(3): 30504-.

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