Ferromagnetic domain wall as a nonreciprocal string
Mesoscale and Nanoscale Physics
2018-09-19 v4
Abstract
We present a simple model of a domain wall in a thin-film ferromagnet. A domain wall is represented as a nonreciprocal string, on which transverse waves propagate with different speeds in opposite directions. The model has three parameters: mass density, tension, and a gyroscopic constant quantifying the nonreciprocity. We discuss the unusual dynamics of a nonreciprocal string in finite geometry. It agrees well with numerically simulated motion of a ferromagnetic domain wall in a strip of constant width.
Keywords
Cite
@article{arxiv.1801.07166,
title = {Ferromagnetic domain wall as a nonreciprocal string},
author = {Shu Zhang and Oleg Tchernyshyov},
journal= {arXiv preprint arXiv:1801.07166},
year = {2018}
}
Comments
Expanded to a full-length paper. 12 pages, 6 figures, 5 animations