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arXiv · 1703.07361

Strong Correlation Effects on Surfaces of Topological Insulators via Holography

Yunseok Seo·Geunho Song·Sang-Jin Sin
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Abstract

We investigate effects of strong correlation on the surface state of topological insulator (TI). We argue that electrons in the regime of crossover from weak anti-localization to weak localization, are strongly correlated and calculate magneto-transport coefficients of TI using gauge gravity principle. Then, we examine, magneto-conductivity (MC) formula and find excellent agreement with the data of chrome doped Bi$_{2}$Te$_{3}$ in the crossover regime. We also find that cusp-like peak in MC at low doping is absent, which is natural since quasi-particles disappear due to the strong correlation.

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Yunseok Seo, Geunho Song, Sang-Jin Sin. 2017-03-21. Strong Correlation Effects on Surfaces of Topological Insulators via Holography. https://doi.org/10.1103/physrevb.96.041104

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