Abstract
A parametrically forced sine-Gordon equation with a fast periodic mean-zero forcing is considered. It is shown that (Formula presented) kinks represent a class of solitary-wave solutions of the equation. This result is applied to quasi-one-dimensional ferromagnets with an easy-plane anisotropy, in a rapidly oscillating magnetic field. In this case the (Formula presented)-kink solution we have introduced corresponds to the uniform “true” domain-wall motion, since the magnetization directions on opposite sides of the wall are antiparallel. In contrast to previous work, no additional anisotropy is required to obtain a true domain wall. Numerical simulations showed good qualitative agreement with the theory.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5033-5035 |
| Number of pages | 3 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 57 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1998 |
| Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics