TITLE

Spin-wave interference in microscopic permalloy tubes

AUTHOR(S)
Balhorn, Felix; Nagrodzki, Lukas; Mendach, Stefan
PUB. DATE
June 2013
SOURCE
Applied Physics Letters;6/3/2013, Vol. 102 Issue 22, p222403
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present permalloy coated needles which act as spin-wave resonators. The permalloy coated needles were investigated using microwave absorption spectroscopy. Thereby, we found up to three resonant modes which correspond to constructively interfering azimuthal spin waves. The resonant modes are well reproduced in calculations based on an analytical model for the spin-wave dispersion employing periodic boundary conditions. The dependence of the resonance frequencies on the needles' radii and the external magnetic field is demonstrated experimentally.
ACCESSION #
88041261

 

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