%0 Journal Article
%T Surface reconstruction in a tight-binding model for the topological Kondo insulator SmB6
%A Pier Paolo Baruselli
%A Matthias Vojta
%J Physics
%D 2015
%I arXiv
%R 10.1088/2053-1583/2/4/044011
%X For the strongly correlated topological insulator SmB6 we discuss the influence of a 2x1 reconstruction of the (001) surface on the topological surface states. Depending on microscopic details, the reconstruction can be a weak or a strong perturbation to the electronic states. While the former leads to a weak backfolding of surface bands only, the latter can modify the surface-state dispersion and lead to a Lifshitz transition. We analyze the quasiparticle interference signal: while this tends to be weak in models for SmB6 in the absence of surface reconstruction, we find that the 2x1 reconstruction can induce novel peaks. We discuss experimental implications.
%U http://arxiv.org/abs/1509.04426v2