Fate of interaction-driven topological insulators under disorder

被引:22
|
作者
Wang, Jing [1 ,2 ,3 ]
Ortix, Carmine [2 ,4 ]
van den Brink, Jeroen [2 ,5 ]
Efremov, Dmitry V. [2 ]
机构
[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China
[2] IFW Dresden, Inst Theoret Solid State Phys, Helmholtzstr 20, D-01069 Dresden, Germany
[3] Tianjin Univ, Dept Phys, Tianjin 300072, Peoples R China
[4] Univ Utrecht, Inst Theoret Phys, Ctr Extreme Matter & Emergent Phenomena, Princetonpl 5, NL-3584 CC Utrecht, Netherlands
[5] Tech Univ Dresden, Inst Theoret Phys, D-01069 Dresden, Germany
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
QUANTIZED HALL CONDUCTANCE; HGTE QUANTUM-WELLS; RENORMALIZATION-GROUP; CRITICAL-POINTS; GRAPHENE; SYSTEMS; STATES; TRANSITION; FERMIONS; PHYSICS;
D O I
10.1103/PhysRevB.96.201104
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We analyze the effect of disorder on the weak-coupling instabilities of a quadratic band crossing point (QBCP) in two-dimensional Fermi systems, which, in the clean limit, display interaction-driven topological insulating phases. In the framework of a renormalization group procedure, which treats fermionic interactions and disorder on the same footing, we test all possible instabilities and identify the corresponding ordered phases in the presence of disorder for both single-valley and two-valley QBCP systems. We find that disorder generally suppresses the critical temperature at which the interaction-driven topologically nontrivial order sets in. Strong disorder can also drive a topological phase transition into a topologically trivial insulating state.
引用
收藏
页数:6
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