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Influence of the Dzyaloshinskii-Moriya interaction on the spin-wave spectra of thin films

Influence of the Dzyaloshinskii-Moriya interaction on the spin-wave spectra of thin films
Influence of the Dzyaloshinskii-Moriya interaction on the spin-wave spectra of thin films

We have developed a theory that describes the spin-wave spectra of ferromagnetic films with Dzyaloshinskii-Moriya interactions. In agreement with recent experiments (Zakeri et al 2010 Phys. Rev. Lett. 104 137203), we demonstrate that the spin-wave dispersion relation is asymmetric with respect to wave vector inversion for a variety of ferromagnetic films with Dzyaloshinskii-Moriya interactions and different crystallographic classes. It is also predicted that, for non-zero wave vectors, the resonance frequency and resonance field can increase or decrease depending on the spin-wave vector orientation. We provide explicit formulas for the spin-wave dispersion relation and its asymmetry, as well as for the dynamic susceptibility for a film under microwave excitation, that can be used to understand ferromagnetic resonance as well as Brillouin light scattering experiments in these classes of magnetic thin films.

0953-8984
1-9
Cortés-Ortuño, D.
97d026d6-1083-4edf-8ba6-2f66a3e15033
Landeros, P.
ade05e37-18cf-4752-b729-0d32f9244ca1
Cortés-Ortuño, D.
97d026d6-1083-4edf-8ba6-2f66a3e15033
Landeros, P.
ade05e37-18cf-4752-b729-0d32f9244ca1

Cortés-Ortuño, D. and Landeros, P. (2013) Influence of the Dzyaloshinskii-Moriya interaction on the spin-wave spectra of thin films. Journal of Physics Condensed Matter, 25 (15), 1-9, [156001]. (doi:10.1088/0953-8984/25/15/156001).

Record type: Article

Abstract

We have developed a theory that describes the spin-wave spectra of ferromagnetic films with Dzyaloshinskii-Moriya interactions. In agreement with recent experiments (Zakeri et al 2010 Phys. Rev. Lett. 104 137203), we demonstrate that the spin-wave dispersion relation is asymmetric with respect to wave vector inversion for a variety of ferromagnetic films with Dzyaloshinskii-Moriya interactions and different crystallographic classes. It is also predicted that, for non-zero wave vectors, the resonance frequency and resonance field can increase or decrease depending on the spin-wave vector orientation. We provide explicit formulas for the spin-wave dispersion relation and its asymmetry, as well as for the dynamic susceptibility for a film under microwave excitation, that can be used to understand ferromagnetic resonance as well as Brillouin light scattering experiments in these classes of magnetic thin films.

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Published date: 17 April 2013

Identifiers

Local EPrints ID: 430006
URI: http://eprints.soton.ac.uk/id/eprint/430006
ISSN: 0953-8984
PURE UUID: b2d7f126-7389-4ab2-8c94-68411ad916a9
ORCID for D. Cortés-Ortuño: ORCID iD orcid.org/0000-0003-3799-3141

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Date deposited: 09 Apr 2019 16:30
Last modified: 09 Nov 2021 15:02

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Contributors

Author: D. Cortés-Ortuño ORCID iD
Author: P. Landeros

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