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

Luis Craco ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2015, vol. 88, issue 11, 1-6

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

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1140/epjb/e2015-60691-2

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