Localized spin excitations in an anisotropic Heisenberg ferromagnet with Dzyaloshinskii-Moriya interactions
Abstract
We investigate the nonlinear spin dynamics of an anisotropic Heisenberg ferromagnetic spin chain with Dzyaloshinskii-Moriya interactions in the semiclassical limit. We have identified four completely integrable spin models with soliton spin excitations for specific parametric choices and also constructed perturbed solitons. We also obtain solitary spin excitations for a linearly perturbed integrable model at higher order.
- Publication:
-
Physical Review B
- Pub Date:
- May 2001
- DOI:
- Bibcode:
- 2001PhRvB..63q2302D
- Keywords:
-
- 02.30.Jr;
- 52.35.Sb;
- 75.10.Hk;
- 02.40.Hw;
- Partial differential equations;
- Solitons;
- BGK modes;
- Classical spin models;
- Classical differential geometry