Programme

P.41 -- Poster, NCTP-43

Date: Wednesday, 1 August 2018

Time: 08:30 - 10:00

Interplay between the spin-orbit coupling and magnetic field in the Lieb lattice

Ta Van Binh 1, Nguyen Duong Bo 1 and Tran Minh Tien 1,2

1. Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam 2. Institute of Physics, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam

Abstract The interplay between the spin-orbit coupling and an external magnetic field in the Lieb lattice is studied. The electron structure of the tight-binding model on the Lieb lattice features both the flat and the Dirac linearly dispersing bands. The spin-orbit coupling can generates a topological insulating state, while the magnetic field often breaks the topology. As a result of the interplay, a selective spin component insulating occurs. The topology is detected by both the edge modes and the Chern number.

Presenter: Nguyen Duong Bo