Topological Kondo Insulators

被引：703

作者：

Dzero, Maxim ^{[1
,2
]}

Sun, Kai ^{[1
,2
]}

Galitski, Victor ^{[1
,2
]}

Coleman, Piers ^{[3
]}

机构：

[1] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA

[2] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[3] Rutgers State Univ, Ctr Mat Theory, Piscataway, NJ 08854 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 10期

关键词：

GAP; VALENCE;

D O I：

10.1103/PhysRevLett.104.106408

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Kondo insulators are a 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) topological indices for various lattice structures. Experimental implications of the topological Kondo insulating behavior are discussed.

引用

页数：4

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