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On-site electron correlations in Bi 2 Se 3 topological insulator

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  • Luis Craco

Abstract

We explore the role of local, multi-orbital electron correlations in Bi 2 Se 3 topological insulator. Based on local-density-approximation plus dynamical-mean-field-theory (LDA + DMFT) we derive a Kondo-Mott electronic transition, predicting maximally non-metallicity in three-dimensional Bi-chalcogenide topological insulators. Our results within the spin-orbit Kondo state show good agreement with scanning tunneling spectroscopy taken on pure and Cu-doped Bi 2 Se 3 samples and effective mass enhancement of Dirac electrons for Cu x Bi 2 Se 3 , confirming the hypothesis of electron correlations in three-dimensional p-band topological insulators. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Suggested Citation

  • Luis Craco, 2015. "On-site electron correlations in Bi 2 Se 3 topological insulator," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 88(11), pages 1-6, November.
    • Handle: RePEc:spr:eurphb:v:88:y:2015:i:11:p:1-6:10.1140/epjb/e2015-60691-2
    DOI: 10.1140/epjb/e2015-60691-2
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    Solid State and Materials;

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