2015/03/16 by Yang Feng, Xiao Feng, Yunbo Ou +13 · 124 citations
Physics and Astronomy · #Condensed matter physics #Fractional quantum Hall effect #Hall effect #Magnetic field #Physics #Physics of Superconductivity and Magnetism #Plateau (mathematics) #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quantum spin Hall effect #Thermal Hall effect #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.115.126801
published in Physical Review Letters 115(12), 126801 (American Physical Society) · 4 figures, supplementary information included
arxiv created 2015/03/16 · openalex publication_date 2015/09/16 · arxiv updated 2015/09/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.