Nonlinear localized excitations in a topological ferromagnetic honeycomb lattice
Mesoscale and Nanoscale Physics
2021-05-31 v3
Abstract
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.
Keywords
Cite
@article{arxiv.2003.14268,
title = {Nonlinear localized excitations in a topological ferromagnetic honeycomb lattice},
author = {Wenhui Feng and Bing Tang and Lanjun Wu and Peng Kong and Chao Yang and Lei Wang and Ke Deng},
journal= {arXiv preprint arXiv:2003.14268},
year = {2021}
}
Comments
This paper has been published in Journal of Magnetism and Magnetic Materials