Quantum anomalous Hall effect
Quantum Anomalous Hall effect is a kind of Hall effect. It is the "quantum" version of the anomalous Hall effect. While the anomalous Hall effect requires a combination of magnetic polarization and spin-orbit coupling to generate a finite Hall voltage even in the absence of an external magnetic field(hence called "anomalous"), the quantum anomalous Hall effect is its quantized version. The Hall conductivity acquires quantized values propertion to integer multiples of the conductance quantum(e^2/h), and is similar to the quantum Hall effect in this regard. [1] The effect has been observed experimentally.[2]
See also
References
- ^ Liu, Chao-Xing; Zhang, Shou-Cheng; Qi, Xiao-Liang (2015-08-28). "The quantum anomalous Hall effect". arXiv:1508.07106.
- ^ Chang, Cui-Zu; Zhang, Jinsong; Feng, Xiao; Shen, Jie; Zhang, Zuocheng; Guo, Minghua; Li, Kang; Ou, Yunbo; Wei, Pang (2013-04-12). "Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator". Science. 340 (6129): 167–170. Bibcode:2013Sci...340..167C. doi:10.1126/science.1234414. ISSN 0036-8075. PMID 23493424.
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