Issue |
EPL
Volume 134, Number 3, May 2021
|
|
---|---|---|
Article Number | 37001 | |
Number of page(s) | 4 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/134/37001 | |
Published online | 14 July 2021 |
Edge state magnetoresistance of a two-dimensional topological insulator
Institute of Semiconductor Physics - 630090 Novosibirsk, Russia and Novosibirsk State University - 630090 Novosibirsk, Russia
(a) brag@isp.nsc.ru (corresponding author)
Received: 28 January 2021
Accepted: 22 March 2021
The magnetoresistance theory of the edge state of a two-dimensional topological insulator is developed. The magnetic field violates the time reversal invariance. Magnetoresistance arises due to the energy gap opened by a magnetic field. The combined action of impurities and magnetic field causes the backscattering of edge electrons. Although impurities are necessary for scattering, a sufficiently strong interaction with impurities leads to backscattering suppression.
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