Spin wave eigenmodes of Dzyaloshinskii domain walls.

Borys, P., Garcia-Sanchez, F., Kim, J.-V. and Stamps, R. L. (2015) Spin wave eigenmodes of Dzyaloshinskii domain walls. [Data Collection]

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A theory for the spin wave eigenmodes of a Dzyaloshinskii domain wall is presented. These walls are Neel-type domain walls that can appear in perpendicularly-magnetized ultrathin ferromagnets in the presence of a sizeable Dzyaloshinskii-Moriya interaction. The mode frequencies for spin waves propagating parallel and perpendicular to the domain wall are computed using a continuum approximation. In contrast to Bloch-type walls, it is found that the spin wave potential associated with Dzyaloshinskii domain walls is not reflectionless, which leads to a finite scattering cross-section for interactions between spin waves and domain walls. A gap produced by the Dzyaloshinskii interaction emerges, and consequences for spin wave driven domain wall motion and band structures arising from periodic wall arrays are discussed.

College / School: College of Science and Engineering > School of Physics and Astronomy
Date Deposited: 29 Jun 2015 10:20
Retention date: 16 December 2025
Funder's Name: Engineering & Physical Sciences Research Council (EPSRC)
URI: http://researchdata.gla.ac.uk/id/eprint/196

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[error in script] (2015); Spin wave eigenmodes of Dzyaloshinskii domain walls.

University of Glasgow


Retrieved: 2018-08-17