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Strong correlation effects on surfaces of topological insulators via holography

Title
Strong correlation effects on surfaces of topological insulators via holography
Author
서윤석
Keywords
SPIN-ORBIT INTERACTION
Issue Date
2017-07
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW B, v. 96, no. 4, Article no. 041104
Abstract
We investigate the effects of strong correlation on the surface state of a topological insulator (TI). We argue that electrons in the regime of crossover from weak antilocalization to weak localization are strongly correlated, and calculate the magnetotransport coefficients of TIs using the gauge-gravity principle. Then, we examine the magnetoconductivity (MC) formula and find excellent agreement with the data of chrome-doped Bi2Te3 in the crossover regime. We also find that the cusplike peak in MC at low doping is absent, which is natural since quasiparticles disappear due to the strong correlation.
URI
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.041104https://repository.hanyang.ac.kr/handle/20.500.11754/114888
ISSN
2469-9950; 2469-9969
DOI
10.1103/PhysRevB.96.041104
Appears in Collections:
RESEARCH INSTITUTE[S](부설연구소) > THE RESEARCH INSTITUTE FOR NATURAL SCIENCES(자연과학연구소) > Articles
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