A gap closing gap  

作　　者：Ke He 

机构地区：[1]State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Bejing 100084,China [2]Bejing Academy of Quantum Information Sciences,Bejing 100193,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2023年第10期227-228,共2页中国科学：物理学、力学、天文学（英文版）

摘　　要：The intrinsic magnetic topological insulator MnBi_(2)Te_(4) is believed to be a feasible pathway to high temperature quantum anomalous Hall(QAH) effect for its large magnetically induced energy gap(-50 meV) at its Dirac surface states predicted in theory [1]. The quantized anomalous Hall resistance has been achieved in its thin flakes [2] and films[3], though in most cases a magnetic field of several teslas is still required. The expected large surface state gap, however.

关 键 词：TOPOLOGICAL MAGNETIC QUANTUM 

分 类 号：O469[理学—凝聚态物理]