Quantum anomalous Hall effect in time-reversal-symmetry breaking topological insulators
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1510.01754.pdf
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3.81 MB
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24f74305d435224ea8d5a145fc55183d
Author(s)
Chang, Cui-zu
Li, Mingda
Date Issued
February 2016
Journal
Journal of Physics: Condensed Matter
Publisher
IOP Publishing
Citation
Chang, Cui-Zu, and Mingda Li. “Quantum Anomalous Hall Effect in Time-Reversal-Symmetry Breaking Topological Insulators.” Journal of Physics: Condensed Matter 28, 12 (March 2016): 123002 © 2016 IOP Publishing Ltd
Version
Author's final manuscript
Abstract
The quantum anomalous Hall effect (QAHE), the last member of Hall family, was predicted to exhibit quantized Hall conductivity αyx= e2/h without any external magnetic field. The QAHE shares a similar physical phenomenon with the integer quantum Hall effect (QHE), whereas its physical origin relies on the intrinsic topological inverted band structure and ferromagnetism. Since the QAHE does not require external energy input in the form of magnetic field, it is believed that this effect has unique potential for applications in future electronic devices with low-power consumption. More recently, the QAHE has been experimentally observed in thin films of the time-reversal symmetry breaking ferromagnetic (FM) topological insulators (TI), Cr- and V- doped (Bi,Sb)2Te3. In this topical review, we review the history of TI based QAHE, the route to the experimental observation of the QAHE in the above two systems, the current status of the research of the QAHE, and finally the prospects for future studies.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Francis Bitter Magnet Laboratory (Massachusetts Institute of Technology)
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/0953-8984/28/12/123002
