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Observation of the propagation and interference of spin waves in ferromagnetic thin films

URN to cite this document:
urn:nbn:de:bvb:355-epub-149228
DOI to cite this document:
10.5283/epub.14922
Perzlmaier, Korbinian ; Woltersdorf, Georg ; Back, Christian H.
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Date of publication of this fulltext: 25 May 2010 13:40


Abstract

We have observed the propagation of spin waves and spin-wave packets in 20-nm-thick Permalloy films upon microwave excitation by means of time-resolved scanning Kerr microscopy. Spin waves can be detected up to 80 mu m away from the driving coplanar strip line. In doing so, we were able to directly determine the phase velocities, dispersion relations and group velocities for ...

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