Spin wave dynamics and the determination of intrinsic Gilbert damping in locally-excited Permalloy thin films

Simple item page
dc.creatorLiu, Zhigang
dc.creatorGiesen, Fabian
dc.creatorZhu, Xiaobin
dc.creatorSydora, Richard D.
dc.creatorFreeman, Mark R.
dc.date2006-06-09
dc.date2007-02-07
dc.date.accessioned2026-07-07T07:48:16Z
dc.date.available2026-07-07T07:48:16Z
dc.descriptionTime-resolved scanning Kerr effect microscopy has been used to study magnetization dynamics in Permalloy thin films excited by transient magnetic pulses generated by a micrometer-scale transmission line structure. The results are consistent with magnetostatic spin wave theory and are supported by micromagnetic simulations. Magnetostatic volume and surface spin waves are measured for the same specimen using different bias field orientations and can be accurately calculated by k-space integrations over all excited plane wave components. A single damping constant of Gilbert form is sufficient to describe both scenarios. The nonuniform pulsed field plays a key role in the spin wave dynamics, with its Fourier transform serving as a weighting function for the participating modes. The intrinsic Gilbert damping parameter $α$ is most conveniently measured when the spin waves are effectively stationary.
dc.description5 pages, 4 figures, accepted by Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/cond-mat/0606235
dc.identifierhttp://arxiv.org/abs/cond-mat/0606235
dc.identifierPhys. Rev. Lett. 98, 087201 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.087201
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/124440
dc.subjectOther Condensed Matter
dc.titleSpin wave dynamics and the determination of intrinsic Gilbert damping in locally-excited Permalloy thin films
dc.typetext

Files

Collections

arXiv