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

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Item type:	Article
Journal or Publication Title:	Physical Review B (PRB)
Publisher:	American Physical Society
Volume:	77
Number of Issue or Book Chapter:	5
Date:	February 2008
Institutions:	Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back
Dewey Decimal Classification:	500 Science > 530 Physics
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	14922

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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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