典型文献
Generalization of the theory of three-dimensional quantum Hall effect of Fermi arcs in Weyl semimetal
文献摘要:
The quantum Hall effect(QHE),which is usually observed in two-dimensional systems,was predicted theoretically and observed experimentally in three-dimensional(3D)topological semimetal.However,there are some inconsistencies between the theory and the experiments showing the theory is imperfect.Here,we generalize the theory of the 3D QHE of Fermi arcs in Weyl semimetal.Through calculating the sheet Hall conductivity of a Weyl semimetal slab,we show that the 3D QHE of Fermi arcs can occur in a large energy range and the thickness dependences of the QHE in different Fermi energies are distinct.When the Fermi energy is near the Weyl nodes,the Fermi arcs give rise to the QHE which is independent of the thickness of the slab.When the Fermi energy is not near the Weyl nodes,the two Fermi arcs form a complete Fermi loop with the assistance of bulk states giving rise to the QHE which is dependent on the sample thickness.We also demonstrate how the band anisotropic terms influence the QHE of Fermi arcs.Our theory complements the imperfections of the present theory of 3D QHE of Fermi arcs.
文献关键词:
中图分类号:
作者姓名:
Mingqi Chang;Yunfeng Ge;Li Sheng
作者机构:
National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing 210093,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China
文献出处:
引用格式:
[1]Mingqi Chang;Yunfeng Ge;Li Sheng-.Generalization of the theory of three-dimensional quantum Hall effect of Fermi arcs in Weyl semimetal)[J].中国物理B(英文版),2022(05):67-71
A类:
QHE
B类:
Generalization,theory,three,dimensional,quantum,Hall,effect,Fermi,arcs,Weyl,semimetal,which,usually,observed,two,systems,was,predicted,theoretically,experimentally,topological,However,there,are,some,inconsistencies,between,experiments,showing,Here,generalize,Through,calculating,sheet,conductivity,slab,that,can,occur,large,energy,range,thickness,dependences,different,energies,distinct,When,near,nodes,give,rise,independent,not,form,complete,loop,assistance,bulk,states,giving,sample,also,demonstrate,band,anisotropic,terms,influence,Our,complements,imperfections,present
AB值:
0.402186
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