Topological magnon bands, quantum correlation and spin conductivity in layered ferrimagnets

Abstract

In this paper, we analyze the influence of topological magnon phases on quantum correlation and spin transport on layered ferrimagnets which is a fascinating topic in condensed matter physics. In the study of topological phases manipulated by an external magnetic field in layered ferrimagnets for the field applied along the easy axis, the system can transfer between a nodal-loop semimetal phase and a Weyl semimetal phase in perpendicularly and laterally magnetized geometries, respectively. The anisotropic nature of these materials means that the interactions between spins depend on their relative orientations in different directions. We analyze the effect of topological magnon bands induced by the coupling parameters on quantum correlation. The influence of these coupling parameters is also investigated on spin conductivity longitudinal and transversal as well.