Ferromagnetic domain wall as a nonreciprocal string

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.

Expanded to a full-length paper. 12 pages, 6 figures, 5 animations

References in corpus (5)

• Inertia and chiral edge modes of a skyrmion magnetic bubble
• Dynamics of a vortex domain wall in a magnetic nanostrip: an application of the collective coordinate approach
• Gilbert damping of magnetostatic modes in a yttrium iron garnet sphere
• Low spin wave damping in the insulating chiral magnet Cu${}_2$OSeO${}_3$
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Cited by in corpus (8)

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• Unidirectional spin-wave channeling along magnetic domain walls of Bloch type
• Spin eigen-excitations of an antiferromagnetic skyrmion
• How a skyrmion can appear both massive and massless
• Local control of a single nitrogen-vacancy center by nanoscale engineered magnetic domain wall motions
• Mechanics of a ferromagnetic domain wall
• Boundary conditions for the Néel order parameter in a chiral antiferromagnetic slab
• Curvilinear spin-wave dynamics beyond the thin-shell approximation: Magnetic nanotubes as a case study