# Strong Correlation Effects on Surfaces of Topological Insulators via Holography

## TL;DR

This paper uses holographic methods to study how strong electron correlations affect the surface states of topological insulators, successfully matching experimental magneto-transport data and revealing the disappearance of quasi-particles.

## Contribution

It introduces a holographic approach to model strong correlations in topological insulators and explains experimental magneto-conductivity features in the crossover regime.

## Key findings

- Holographic calculations match experimental data for doped Bi2Te3.
- Strong correlations suppress quasi-particle peaks in magneto-conductivity.
- Cusp-like peaks are absent at low doping due to strong correlation effects.

## 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.