Topological quantum phase transition in magnetic topological insulator upon magnetization rotation

Article

关键词: HALL INSULATOR;    STATE;    WELLS;   

DOI  :  10.1103/PhysRevB.98.140404

来源: SCIE

【 摘 要 】

We report a continuous phase transition between quantum-anomalous-Hall and trivial-insulator phases in a magnetic topological insulator upon magnetization rotation. The Hall conductivity transits from one plateau of quantized Hall conductivity e(2)/h to the other plateau of zero Hall conductivity. The transition curves taken at various temperatures cross almost at a single point, exemplifying the critical behavior of the transition. The slope of the transition curves follows a power-law temperature dependence with a critical exponent of 0.61. This suggests a common underlying origin in the plateau transitions between the quantum anomalous Hall and quantum Hall systems, which is a percolation of one-dimensional chiral edge channels.

【 授权许可】

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