Kondo breakdown in topological Kondo insulators

Victor Alexandrov, Piers Coleman, Onur Erten

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

Motivated by the observation of light surface states in SmB6, we examine the effects of surface Kondo breakdown in topological Kondo insulators. We present both numerical and analytic results which show that the decoupling of the localized moments at the surface disturbs the compensation between light and heavy electrons and dopes the Dirac cone. Dispersion of these uncompensated surface states is dominated by intersite hopping, which leads to much lighter quasiparticles. These surface states are also highly durable against the effects of surface magnetism and decreasing thickness of the sample.

Original languageEnglish (US)
Article number177202
JournalPhysical Review Letters
Volume114
Issue number17
DOIs
StatePublished - Apr 28 2015
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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