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arXiv · 0912.3750

Topological Kondo Insulators

Maxim Dzero·Kai Sun·Victor Galitski·Piers Coleman
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Abstract

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.

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Maxim Dzero, Kai Sun, Victor Galitski, Piers Coleman. 2009-12-18. Topological Kondo Insulators. https://doi.org/10.1103/physrevlett.104.106408

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