Generation of magnonic spin wave traps

Spatially resolved measurements of the magnetization dynamics induced by an intense laser pump-pulse reveal that the frequencies of resulting spin wave modes depend strongly on the distance to the pump center. This can be attributed to a laser generated temperature profile. On a CoFeB thin film magn...

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Published in:arXiv.org 2014-05
Main Authors: Busse, Frederik, Mansurova, Maria, Lenk, Benjamin, Walter, Marvin, Münzenberg, Markus
Format: Article
Language:English
Subjects:
Magnons
Temperature gradients
Temperature profiles
Thin films
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Mansurova, Maria
Lenk, Benjamin
Walter, Marvin
Münzenberg, Markus
description Spatially resolved measurements of the magnetization dynamics induced by an intense laser pump-pulse reveal that the frequencies of resulting spin wave modes depend strongly on the distance to the pump center. This can be attributed to a laser generated temperature profile. On a CoFeB thin film magnonic crystal, Damon-Eshbach modes are expected to propagate away from the point of excitation. The experiments show that this propagation is frustrated by the strong temperature gradient
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subjects Magnons
Temperature gradients
Temperature profiles
Thin films
title Generation of magnonic spin wave traps
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