Correlated electrons in a Crystalline Topological insulator

Franca Manghi

doi:10.1103/physrevb.103.115114

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arXiv · 2012.04513

Correlated electrons in a Crystalline Topological insulator

Franca Manghi

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Abstract

We study the effects of e-e interaction in a 3D Crystalline Topological Insulator by adding on-site repulsion to the single-particle Hamiltonian and solving the many-body problem within Cluster Perturbation Theory. The goal is to clarify how many body effects modify the topological phase that stems from the crystal symmetries. Tuning the strength of the on-site interaction we show that band inversion disappears in the bulk and surface states loose their metallic character.

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Franca Manghi. 2020-12-08. Correlated electrons in a Crystalline Topological insulator. https://doi.org/10.1103/physrevb.103.115114

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