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Phys Rev Lett. 2002 Dec 2;89(23):237202. Epub 2002 Nov 13.

Time-resolved measurement of propagating spin waves in ferromagnetic thin films.

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1
Seagate Research, 1251 Waterfront Place, Pittsburgh, Pennsylvania 15222, USA. Mark.Covington@seagate.com

Erratum in

  • Phys Rev Lett. 2004 Feb 27;92(8):089903.

Abstract

We measure the propagation of spatially localized spin waves in NiFe thin films through local inductive detection of the dynamic magnetization. A pulsed magnetic field excites a linear superposition of spin wave modes with a distribution that is predominantly driven by the spatial dependence of the in-plane excitation field. The results of numerical micromagnetic calculations exhibit excellent agreement with experiment and show that a comprehensive account of spatial nonuniformity and propagation is necessary to accurately measure the intrinsic damping rate.

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