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dc.contributor.authorBarman, A.en_GB
dc.contributor.authorKruglyak, V.V.en_GB
dc.contributor.authorHicken, R.J.en_GB
dc.contributor.authorRowe, J.M.en_GB
dc.contributor.authorKundrotaite, A.en_GB
dc.contributor.authorScott, J.en_GB
dc.contributor.authorRahman, M.en_GB
dc.date.accessioned2013-01-18T12:00:48Zen_GB
dc.date.accessioned2013-03-20T13:13:19Z
dc.date.issued2004-05-26en_GB
dc.description.abstractWe have used time-resolved scanning Kerr effect microscopy to study dephasing of spin wave modes in a square Ni81Fe19 element of 10 μm width and 150 nm thickness. When a static magnetic field H was applied parallel to an edge of the square, demagnetized regions appeared at the edges orthogonal to the field. When H was applied along a diagonal, a demagnetized region appeared along the opposite diagonal. Time-resolved images of the out-of-plane magnetization component showed stripes that lie perpendicular to H and indicate the presence of spin wave modes with wave vector parallel to the static magnetization. The transient Kerr rotation was measured at different positions along an axis parallel to H, and the power spectra revealed a number of different modes. Micromagnetic simulations reproduce both the observed images and the mode frequencies. This study allows us to understand an anisotropic damping observed at the center of the square element in terms of dephasing of the resonant mode spectrum.en_GB
dc.identifier.citationVol. 69 (17), article 174426en_GB
dc.identifier.doi10.1103/PhysRevB.69.174426en_GB
dc.identifier.urihttp://hdl.handle.net/10036/4178en_GB
dc.language.isoenen_GB
dc.publisherAmerican Physical Societyen_GB
dc.titleImaging the dephasing of spin wave modes in a square thin film magnetic elementen_GB
dc.typeArticleen_GB
dc.date.available2013-01-18T12:00:48Zen_GB
dc.date.available2013-03-20T13:13:19Z
dc.identifier.issn1098-0121en_GB
dc.identifier.issn1550-235Xen_GB
dc.descriptionCopyright © 2004 The American Physical Societyen_GB
dc.identifier.journalPhysical Review B - Condensed Matter and Materials Physicsen_GB


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