Observation of the Quantum Anomalous Hall Insulator to Anderson Insulator Quantum Phase Transition and its Scaling Behavior
Name
PhysRevLett.117.126802.pdf
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458.69 KB
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Author(s)
Zhao, Weiwei
Li, Jian
Jain, J. K.
Liu, Chaoxing
Chan, Moses H. W.
Chang, Cui-zu
Moodera, Jagadeesh
Date Issued
September 2016
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Chang, Cui-Zu et al. “Observation of the Quantum Anomalous Hall Insulator to Anderson Insulator Quantum Phase Transition and Its Scaling Behavior.” Physical Review Letters 117.12 (2016): n. pag. © 2016 American Physical Society
Version
Final published version
Abstract
Fundamental insight into the nature of the quantum phase transition from a superconductor to an insulator in two dimensions, or from one plateau to the next or to an insulator in the quantum Hall effect, has been revealed through the study of its scaling behavior. Here, we report on the experimental observation of a quantum phase transition from a quantum-anomalous-Hall insulator to an Anderson insulator in a magnetic topological insulator by tuning the chemical potential. Our experiment demonstrates the existence of scaling behavior from which we extract the critical exponent for this quantum phase transition. We expect that our work will motivate much further investigation of many properties of quantum phase transition in this new context.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.117.126802
