2009/12/18 by Maxim Dzero, Kai Sun, Victor Galitski +1 · 2 citations
Physics and Astronomy · #cond-mat.str-el #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.104.106408
published as Phys. Rev. Lett. 104, 106408 (2010) · 4 pages, 2 figures
arxiv created 2009/12/18 · arxiv updated 2013/05/29
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 Z2 strong and weak topological insulator indices for various lattice structures. Experimental implications of the topological Kondo insulating behavior are discussed.