Self-focusing of spin waves in Permalloy microstripes

Excitation and propagation of spin waves in Permalloy microstripes magnetized in their plane perpendicularly to the axis have been investigated by means of microfocus Brillouin light scattering spectroscopy with high spatial resolution. We show that the spatial profile of the spin-wave beam demonstr...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2007-12, Vol.91 (25), p.252504-252504-3
Main Authors: Demidov, Vladislav E., Demokritov, Sergej O., Rott, Karsten, Krzysteczko, Patryk, Reiss, Guenter
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Excitation and propagation of spin waves in Permalloy microstripes magnetized in their plane perpendicularly to the axis have been investigated by means of microfocus Brillouin light scattering spectroscopy with high spatial resolution. We show that the spatial profile of the spin-wave beam demonstrates a focusing at a certain distance from the excitation source depending on the stripe width. A model connecting the observed phenomenon with an interference of different spin-wave modes existing in the stripe due to the finite-size effect is proposed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2825421