Ferromagnetic domain wall as a nonreciprocal string.
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 a strip of constant width.
Publisher URL: http://arxiv.org/abs/1801.07166
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