True amplification of spin waves in magnonic nano-waveguides.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
20 Feb 2024
20 Feb 2024
Historique:
received:
01
06
2023
accepted:
05
02
2024
medline:
21
2
2024
pubmed:
21
2
2024
entrez:
20
2
2024
Statut:
epublish
Résumé
Magnonic nano-devices exploit magnons - quanta of spin waves - to transmit and process information within a single integrated platform that has the potential to outperform traditional semiconductor-based electronics. The main missing cornerstone of this information nanotechnology is an efficient scheme for the amplification of propagating spin waves. The recent discovery of spin-orbit torque provided an elegant mechanism for propagation losses compensation. While partial compensation of the spin-wave losses has been achieved, true amplification - the exponential increase in the spin-wave intensity during propagation - has so far remained elusive. Here we evidence the operating conditions to achieve unambiguous amplification using clocked nanoseconds-long spin-orbit torque pulses in magnonic nano-waveguides, where the effective magnetization has been engineered to be close to zero to suppress the detrimental magnon scattering. We achieve an exponential increase in the intensity of propagating spin waves up to 500% at a propagation distance of several micrometers.
Identifiants
pubmed: 38378662
doi: 10.1038/s41467-024-45783-1
pii: 10.1038/s41467-024-45783-1
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1560Subventions
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : 423113162
Organisme : Deutsche Forschungsgemeinschaft (German Research Foundation)
ID : 433682494 - SFB 1459
Informations de copyright
© 2024. The Author(s).
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