Programme

P.12 -- Poster, VCTP-46

Date: Tuesday, 5 October 2021

Time: 08:30 - 10:00

Magnetic topological phases in the spinful Haldane model with spin exchange

Thanh-Mai Thi Tran and Minh-Tien Tran

Institute of Physics, Vietnam Academy of Science and Technology, Hanoi, Vietnam

Magnetic topological phases in the spinful Haldane model with spin exchange between itinerant electrons and magnetic moments are studied within the dynamical mean field theory. The magnetic nature of the phases is determined by the spontaneous magnetization, and the topological one is determined by the Chern number as well as the cross of the zeros of the diagonal Green function. A antiferromagnetic phase with topologically breaking of the spin symmetry, where electrons with one spin orientation are in topological insulating state, while electrons with the opposite spin orientation are in topologically trivial one, is realized as a mutual interplay between the spontaneous magnetization and the sublattice asymmetry.

Presenter: Tran Thi Thanh Mai