Nonlinear localized excitations in a topological ferromagnetic honeycomb lattice

Autor:	Feng, Wenhui, Tang, Bing, Wu, Lanjun, Kong, Peng, Yang, Chao, Wang, Lei, Deng, Ke
Rok vydání:	2020
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Journal of Magnetism and Magnetic Materials 536(2021)168089
Druh dokumentu:	Working Paper
DOI:	10.1016/j.jmmm.2021.168089
Popis:	We theoretically investigate nonlinear localized excitations in a Heisenberg honeycomb ferromagnet with a second neighbour Dzialozinskii-Moriya interaction, which has been proved to possess the topological band structure. Using the time-dependent variational principle, we obtain the equation of motion for the system in the Glauber coherent-state representation. By means of the semidiscrete multiple-scale method, different types of nonlinear localized excitations are gotten.Our results show that both two-dimensional discrete breathers and bulk gap solitons may occur in the Heisenberg honeycomb ferromagnet. Comment: This paper has been published in Journal of Magnetism and Magnetic Materials
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2003.14268 Zobrazit plný text záznamu View this record from Arxiv