Programme

P.54 -- Poster, VCTP-49

Date: Friday, 2 August 2024

Time: 08:30 - 10:00

Research on stable phases in theoretical models for kagome magnetic materials.

Tran Thi Thanh Mai, Tran Minh Tien

Institute of Physics

We study the emergence and properties of stable phases in models for kagome magnetic materials. In previous studies, we constructed a minimal model for kagome magnetic materials consisting of two terms. The first term describes the Heisenberg spin exchange of electrons. We consider the case where the spin exchange is isotropic in-plane but anisotropic out-of-plane. The second term is the Dzyaloshinskii-Moriya interaction. We consider the Dzyaloshinskii-Moriya interaction to be parallel to the z-axis only due to the symmetry of the kagome lattice. In this study, we will extend the above model to investigate the proposed magnetic competition in kagome magnetic materials. This model can describe the electronic dynamics in kagome magnetic materials. The model is based on the tight-binding model of itinerant electrons and the double exchange model. Using the Bogoliubov variational principle we find the ground state at zero temperature.

Presenter: Tran Thi Thanh Mai