Bosonic Halperin(441)Fractional Quantum Hall Effect at Filling Factorν=2/5  

作　　者：Tian-Sheng Zeng Liangdong Hu WZhu 曾天生;胡梁栋;朱伟(Department of Physics,School of Physical Science and Technology,Xiamen University,Xiamen 361005,China;Zhejiang University,Hangzhou 310027,China;School of Science,Westlake University,Hangzhou 310024,China;Key Laboratory for Quantum Materials of Zhejiang Province,School of Science,Westlake University,Hangzhou 310024,China)

机构地区：[1]Department of Physics,School of Physical Science and Technology,Xiamen University,Xiamen 361005,China [2]Zhejiang University,Hangzhou 310027,China [3]School of Science,Westlake University,Hangzhou 310024,China [4]Key Laboratory for Quantum Materials of Zhejiang Province,School of Science,Westlake University,Hangzhou 310024,China

出　　处：《Chinese Physics Letters》2022年第1期21-26,共6页中国物理快报（英文版）

基　　金：supported by the funding of Westlake University;the National Natural Science Foundation of China(Grant Nos.11974288,92165102,and 12074320)。

摘　　要：Quantum Hall effects with multicomponent internal degrees of freedom facilitate the playground of novel emergent topological orders.Here,we explore the correlated topological phases of two-component hardcore bosons at a total filling factorν=2/5 in topological lattice models under the interplay of intracomponent and intercomponent repulsions.We give the numerical demonstration of the emergence of Halperin(441)fractional quantum Hall effect based on exact diagonalization and density-matrix renormalization group methods.We elucidate its topological features including the degeneracy of the ground state,fractionally quantized topological Chern number matrix and chiral edge modes.

关 键 词：methods. TOPOLOGICAL FRACTIONAL 

分 类 号：O469[理学—凝聚态物理]