title: Correlated topological insulators with mixed valence.
abstract: We propose the local density approximation+Gutzwiller method incorporating a Green's function scheme to study the topological physics of correlated materials from the first principles. Applying this method to typical mixed valence materials SmB(6), we find its nontrivial Z(2) topology, indicating that SmB(6) is a strongly correlated topological insulator. The unique feature of this compound is that its surface states contain three Dirac cones in contrast to most known topological insulators.
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Lu
authors.forename: JianZhou
authors.initials: J
authors.lastname: Zhao
authors.forename: Hongming
authors.initials: H
authors.lastname: Weng
authors.forename: Zhong
authors.initials: Z
authors.lastname: Fang
authors.forename: Xi
authors.initials: X
authors.lastname: Dai