Interacting topological magnons in the Kitaev-Heisenberg honeycomb ferromagnets with Dzyaloshinskii-Moriya interaction

2025/01/05 by Jie Wang, Pei‐Jer Chen, Wang, Jie +4
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism

paper · pdf · doi:10.48550/arxiv.2501.02689

Abstract

This theoretical work is devoted to investigating the magnon-magnon interaction effect in a two-dimensional Heisenberg-Kitaev honeycomb ferromagnet with Dzyaloshinskii-Moriya interaction (DMI). Based on the first-order Green function formalism, we calculate the thermal-fluctuation-induced temperature-dependent self-energy corrections of magnons. Our calculations reveal that the critical temperature for temperature-induced topological phase transitions monotonically approaches the Curie temperature with increasing DMI strength. Furthermore, it is shown that the critical temperature for topological phase transitions is correlated with Dzyaloshinskii-Moriya interaction and magnetic field strength.

Related

• Topological phase transitions in a honeycomb ferromagnet with unequal Dzyaloshinskii-Moriya interactions
• Interacting topological magnons in a checkerboard ferromagnet
• Chirality-selective topological magnon phase transition induced by interplay of anisotropic exchange interactions in honeycomb ferromagnet
• Successive topological phase transitions in two distinct spin-flop phases on the honeycomb lattice
• Finite-temperature topological magnons in honeycomb ferromagnets with sublattice asymmetries