Level Statistics Crossover of Chiral Surface States in a Three-Dimensional Quantum Hall System

被引：0
作者：
Kausar, Rubah [1 ]
Zheng, Chao [1 ]
Wan, Xin [1 ,2 ]
机构：
[1] Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China
[2] Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2021年 / 38卷 / 05期
基金：
中国国家自然科学基金;
关键词：
METAL-INSULATOR-TRANSITION; DIRECTED NETWORK MODEL; CONDUCTANCE; FLUCTUATIONS; LOCALIZATION; FIELD;
D O I：
10.1088/0256-307X/38/5/057306
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Recent experiments have demonstrated the realization of the three-dimensional quantum Hall effect in highly anisotropic crystalline materials, such as ZrTe5 and BaMnSb2. Such a system supports chiral surface states in the presence of a strong magnetic field, which exhibit a one-dimensional metal-insulator crossover due to suppression of surface diffusion by disorder potential. We study the nontrivial surface states in a lattice model and find a wide crossover of the level-spacing distribution through a semi-Poisson distribution. We also discover a nonmonotonic evolution of the level statistics due to the disorder-induced mixture of surface and bulk states.
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页数：5
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