Nonequilibrium sub-10 nm spin-wave soliton formation in FePt nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10443958" target="_blank" >RIV/00216208:11320/22:10443958 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=KoVZGQrCYM" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=KoVZGQrCYM</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1126/sciadv.abn0523" target="_blank" >10.1126/sciadv.abn0523</a>
Alternative languages
Result language
angličtina
Original language name
Nonequilibrium sub-10 nm spin-wave soliton formation in FePt nanoparticles
Original language description
Magnetic nanoparticles such as FePt in the L1(0) phase are the bedrock of our current data storage technology. As the grains become smaller to keep up with technological demands, the superparamagnetic limit calls for materials with higher magnetocrystalline anisotropy. This, in turn, reduces the magnetic exchange length to just a few nanometers, enabling magnetic structures to be induced within the nanoparticles. Here, we describe the existence of spin-wave solitons, dynamic localized bound states of spin-wave excitations, in FePt nanoparticles. We show with time-resolved x-ray diffraction and micromagnetic modeling that spin-wave solitons of sub-10 nm sizes form out of the demagnetized state following femtosecond laser excitation. The measured soliton spin precession frequency of 0.1 THz positions this system as a platform to develop novel miniature devices.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA19-13659S" target="_blank" >GA19-13659S: Interfaces between Fe-Chalcogenide thin films and insulators: impact on structure, magnetism, and unconventional superconductivity</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science advances [online]
ISSN
2375-2548
e-ISSN
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Volume of the periodical
8
Issue of the periodical within the volume
13
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
eabn0523
UT code for WoS article
000778886800029
EID of the result in the Scopus database
2-s2.0-85127511489