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Ultrafast Demagneti...
Ultrafast Demagnetization Control in Magnetophotonic Surface Crystals
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- Mishra, K. (författare)
- Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands
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- Rowan-Robinson, Richard M. (författare)
- Uppsala universitet,Materialfysik
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- Ciuciulkaite, Agne, MSc, 1991- (författare)
- Uppsala universitet,Materialfysik
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- Davies, C. S. (författare)
- Radboud University, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands;FELIX Laboratory, Radboud University, 6525 ED Nijmegen, The Netherlands
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- Dmitriev, Alexandre, 1975 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, SE-41296 Gothenburg, Sweden.
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- Kapaklis, Vassilios, 1978- (författare)
- Uppsala universitet,Materialfysik
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- Kimel, A. V. (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands.
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- Kirilyuk, A. (författare)
- Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands.;FELIX Laboratory, Radboud University, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
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(creator_code:org_t)
- 2022-11-02
- 2022
- Engelska.
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Ingår i: Nano Letters. - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 22:23, s. 9773-80
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Magnetic memory combining plasmonics and magnetism is poised to dramatically increase the bit density and energy efficiency of light-assisted ultrafast magnetic storage, thanks to nanoplasmon-driven enhancement and confinement of light. Here we devise a new path for that, simultaneously enabling light driven bit downscaling, reduction of the required energy for magnetic memory writing, and a subtle control over the degree of demagnetization in a magnetophotonic surface crystal. It features a regular array of truncated-nanocone-shaped Au-TbCo antennas showing both localized plasmon and surface lattice resonance modes. The ultrafast magnetization dynamics of the nanoantennas show a 3-fold resonant enhancement of the demagnetization efficiency. The degree of demagnetization is further tuned by activating surface lattice modes. This reveals a platform where ultrafast demagnetization is localized at the nanoscale and its extent can be controlled at will, rendering it multistate and potentially opening up so-far-unforeseen nanomagnetic neuromorphic-like systems operating at femtosecond time scales controlled by light.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- magnetoplasmonics
- magnetophotonics
- ultrafast magnetization dynamics
- all-optical switching
- demagnetization
- surface lattice resonances
- magnetization
- resonance
- dynamics
- Chemistry
- Science & Technology - Other Topics
- Materials Science
- Physics
- magnetoplasmonics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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