Programme

P.38 -- Poster, NCTP-39

Date: Wednesday, 30-07-2014

Time: 14h00 - 15h30

Edge states in a correlated Chern insulator

Hong-Son Nguyen $1$ and Minh-Tien Tran $2$

$^1$Department of Occupational Safety and Health, Trade Union University, 169 Tay Son, Hanoi, Vietnam \\ $^2$Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Hanoi, Vietnam

Edge states in a correlated Chern insulator is investigated within an inhomogeneous dynamical mean-field theory. The correlated Chern insulator is described by the Haldane model and the electron correlations are incorporated by introducing the short-range interaction between the itinerant electrons and localized fermions. It is found that the edge states are affected by electron correlations. In weak electron correlation region, the Dirac electron states are established at the boundary of the insulator that the phase is typically a Chern insulator, while in strong correlation region, the edge states are not observed.

Presenter: Nguyễn Hồng Sơn