title: Observation of the Zero Hall Plateau in a Quantum Anomalous Hall Insulator.
abstract: We report experimental investigations on the quantum phase transition between the two opposite Hall plateaus of a quantum anomalous Hall insulator. We observe a well-defined plateau with zero Hall conductivity over a range of magnetic field around coercivity when the magnetization reverses. The features of the zero Hall plateau are shown to be closely related to that of the quantum anomalous Hall effect, but its temperature evolution exhibits a significant difference from the network model for a conventional quantum Hall plateau transition. We propose that the chiral edge states residing at the magnetic domain boundaries, which are unique to a quantum anomalous Hall insulator, are responsible for the novel features of the zero Hall plateau.
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Feng
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Feng
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.|Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Yunbo
authors.initials: Y
authors.lastname: Ou
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305-4045, USA.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Liguo
authors.initials: L
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Dongyang
authors.initials: D
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Gaoyuan
authors.initials: G
authors.lastname: Jiang
authors.affiliation: Department of Physics, Stanford University, Stanford, California 94305-4045, USA.|Collaborative Innovation Center of Quantum Matter, Beijing 100084, China.
authors.forename: Shou-Cheng
authors.initials: SC
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.|Collaborative Innovation Center of Quantum Matter, Beijing 100084, China.
authors.forename: Ke
authors.initials: K
authors.lastname: He
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.|Collaborative Innovation Center of Quantum Matter, Beijing 100084, China.
authors.forename: Xucun
authors.initials: X
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.|Collaborative Innovation Center of Quantum Matter, Beijing 100084, China.
authors.forename: Qi-Kun
authors.initials: QK
authors.lastname: Xue
authors.affiliation: State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.|Collaborative Innovation Center of Quantum Matter, Beijing 100084, China.
authors.forename: Yayu
authors.initials: Y
authors.lastname: Wang