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Excitation of Whisp...
Excitation of Whispering Gallery Magnons in a Magnetic Vortex
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Schultheiss, K. (author)
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Verba, R. (author)
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Wehrmann, F. (author)
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Wagner, K. (author)
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Körber, L. (author)
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Hula, T. (author)
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Hache, T. (author)
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Kákay, A. (author)
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- Awad, Ahmad (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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Tiberkevich, V. (author)
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Slavin, A. N. (author)
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Fassbender, J. (author)
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Schultheiss, H. (author)
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 122
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We present the generation of whispering gallery magnons with unprecedented high wave vectors via nonlinear 3-magnon scattering in a μm-sized magnetic Ni81Fe19 disc which is in the vortex state. These modes exhibit a strong localization at the perimeter of the disc and practically zero amplitude in an extended area around the vortex core. They originate from the splitting of the fundamental radial magnon modes, which can be resonantly excited in a vortex texture by an out-of-plane microwave field. We shed light on the basics of this nonlinear scattering mechanism from an experimental and theoretical point of view. Using Brillouin light scattering microscopy, we investigated the frequency and power dependence of the 3-magnon splitting. The spatially resolved mode profiles give evidence for the localization at the boundaries of the disc and allow for a direct determination of the modes wave number.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Keyword
- whispering gallery
- magnons
- Spintronics
- Brillouin light scattering
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Schultheiss, K.
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Verba, R.
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Wehrmann, F.
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Wagner, K.
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Körber, L.
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Hula, T.
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show more...
-
Hache, T.
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Kákay, A.
-
Awad, Ahmad
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Tiberkevich, V.
-
Slavin, A. N.
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Fassbender, J.
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Schultheiss, H.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Nano technology
- Articles in the publication
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Physical Review ...
- By the university
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University of Gothenburg