Kondo insulators are particularly simple type of heavy electron material, where a filled band of heavy quasiparticles gives rise to a narrow band insulator. Starting with the Anderson lattice Hamiltonian, we develop a topological classification of emergent band structures for Kondo insulators and show that these materials may host three-dimensional topological insulating phases. We propose a general and practical prescription of calculating the Z_2 strong and weak topological insulator indices for various lattice structures. Experimental implications of the topological Kondo insulating behavior are discussed.
@article{arxiv.0912.3750,
title = {Topological Kondo Insulators},
author = {Maxim Dzero and Kai Sun and Victor Galitski and Piers Coleman},
journal= {arXiv preprint arXiv:0912.3750},
year = {2013}
}