Programme

P.89 -- Posters, VCTP-50

Date: Thursday, 7 August 2025

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 of kagome magnetic materials. In previous work, we constructed a minimal model consisting of two key terms. The first term describes Heisenberg spin exchange between electrons. In this term, we consider the exchange to be isotropic within the plane but anisotropic out of plane. The second term represents the Dzyaloshinskii-Moriya interaction, which we assume to be aligned along the z-axis due to the symmetry of the kagome lattice. In this study, we extend the previous model to investigate magnetic competition in kagome magnetic systems. This extended model is based on a combination of the tight-binding model and the double exchange model. Using the Bogoliubov variational principle, we determine the ground state at zero temperature.

Presenter: Tran Thị Thanh Mai