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Strong correlation effects on surfaces of topological insulators via holography
- Authors
- Seo, Yunseok; Song, Geunho; Sin, Sang-Jin
- Issue Date
- Jul-2017
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW B, v.96, no.4, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW B
- Volume
- 96
- Number
- 4
- Start Page
- 1
- End Page
- 5
- ISSN
- 2469-9950
- 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.
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Related Researcher
- Sin, Sang Jin
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)