Program

P.45 -- Poster, NCTP-40

Date: Tuesday, 28 July 2015

Time: 08h30 - 10h00

Nonlocal correaltions in a correlated Chern insulator

Nguyen Hong-Son and Tran Minh-Tien

Department of Occupational Safety and Health, Trade Union University, 169 Tay Son, Hanoi, Vietnam, and Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Hanoi, Vietnam

Effect of nonlocal correlations in a correlated Chern insulator is investigated within the cellular dynamical mean-field theory. The correlated Chern insulator is described by the Haldane model and the electron correlations are incorporated by introducing the local interaction between the itinerant electrons and localized fermions. In the homogeneous phase, the electron correlations drive the itinerant electrons from the Chern topological insulator to a metallic phase, and then to a Mott nontopological insulator. Nonlocal correlations do not affect the phase transition qualitatively.

Presenter: Nguyen Hong Son