Spin-wave interference in three-dimensional rolled-up ferromagnetic microtubes

Spin-wave interference in three-dimensional rolled-up ferromagnetic microtubes

We have investigated spin-wave excitations in rolled-up Permalloy microtubes using microwave absorption spectroscopy. We find a series of quantized azimuthal modes which arise from the constructive interference of Damon-Eshbach type spin waves propagating around the circumference of the microtubes,...

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Veröffentlicht in:arXiv.org 2009-08
Hauptverfasser: Balhorn, Felix, Mansfeld, Sebastian, Krohn, Andreas, Topp, Jesco, Hansen, Wolfgang, Heitmann, Detlef, Mendach, Stefan
Format: Artikel
Sprache:eng
Schlagworte:
Ferromagnetism
Ferrous alloys
Interference
Magnetic alloys
Magnons
Microwave absorption
Physics - Materials Science
Physics - Other Condensed Matter
Wave propagation
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Zusammenfassung:We have investigated spin-wave excitations in rolled-up Permalloy microtubes using microwave absorption spectroscopy. We find a series of quantized azimuthal modes which arise from the constructive interference of Damon-Eshbach type spin waves propagating around the circumference of the microtubes, forming a spin-wave resonator. The mode spectrum can be tailored by the tube's radius and number of rolled-up layers.
ISSN:2331-8422
DOI:10.48550/arxiv.0908.2082