Interactions of spin waves with a magnetic vortex

J. P. Park; P. A. Crowell

doi:10.1103/PhysRevLett.95.167201

Interactions of spin waves with a magnetic vortex

J. P. Park, P. A. Crowell

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

136 Scopus citations

Abstract

We have investigated azimuthal spin-wave modes in magnetic vortex structures using time-resolved Kerr microscopy. Spatially resolved phase and amplitude spectra of ferromagnetic disks with diameters from 5μm down to 500 nm reveal that the lowest order azimuthal spin-wave mode splits into a doublet as the disk size decreases. We demonstrate that the splitting is due to the coupling between spin waves and the gyrotropic motion of the vortex core.

Original language	English (US)
Article number	167201
Journal	Physical review letters
Volume	95
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.95.167201
State	Published - Oct 14 2005

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10.1103/PhysRevLett.95.167201

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title = "Interactions of spin waves with a magnetic vortex",

abstract = "We have investigated azimuthal spin-wave modes in magnetic vortex structures using time-resolved Kerr microscopy. Spatially resolved phase and amplitude spectra of ferromagnetic disks with diameters from 5μm down to 500 nm reveal that the lowest order azimuthal spin-wave mode splits into a doublet as the disk size decreases. We demonstrate that the splitting is due to the coupling between spin waves and the gyrotropic motion of the vortex core.",

author = "Park, \{J. P.\} and Crowell, \{P. A.\}",

year = "2005",

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doi = "10.1103/PhysRevLett.95.167201",

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AU - Park, J. P.

AU - Crowell, P. A.

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N2 - We have investigated azimuthal spin-wave modes in magnetic vortex structures using time-resolved Kerr microscopy. Spatially resolved phase and amplitude spectra of ferromagnetic disks with diameters from 5μm down to 500 nm reveal that the lowest order azimuthal spin-wave mode splits into a doublet as the disk size decreases. We demonstrate that the splitting is due to the coupling between spin waves and the gyrotropic motion of the vortex core.

AB - We have investigated azimuthal spin-wave modes in magnetic vortex structures using time-resolved Kerr microscopy. Spatially resolved phase and amplitude spectra of ferromagnetic disks with diameters from 5μm down to 500 nm reveal that the lowest order azimuthal spin-wave mode splits into a doublet as the disk size decreases. We demonstrate that the splitting is due to the coupling between spin waves and the gyrotropic motion of the vortex core.

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VL - 95

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Interactions of spin waves with a magnetic vortex

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