Spin-Wave Emission from Vortex Cores under Static Magnetic Bias Fields
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU140613" target="_blank" >RIV/00216305:26620/21:PU140613 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.nanolett.0c03740" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.nanolett.0c03740</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.nanolett.0c03740" target="_blank" >10.1021/acs.nanolett.0c03740</a>
Alternative languages
Result language
angličtina
Original language name
Spin-Wave Emission from Vortex Cores under Static Magnetic Bias Fields
Original language description
We studied the influence of a static in-plane magnetic field on the alternating-field-driven emission of nanoscale spin waves from magnetic vortex cores. Time-resolved scanning transmission X-ray microscopy was used to image spin waves in disk structures of synthetic ferrimagnets and single ferromagnetic layers. For both systems, it was found that an increasing magnetic bias field continuously displaces the wave-emitting vortex core from the center of the disk toward its edge without noticeably altering the spin-wave dispersion relation. In the case of the single-layer disk, an anisotropic lateral expansion of the core occurs at higher magnetic fields, which leads to a directional rather than radial-isotropic emission and propagation of waves. Micromagnetic simulations confirm these findings and further show that focusing effects occur in such systems, depending on the shape of the core and controlled by the static magnetic bias field.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nano Letters
ISSN
1530-6984
e-ISSN
1530-6992
Volume of the periodical
21
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
1584-1590
UT code for WoS article
000624334100004
EID of the result in the Scopus database
2-s2.0-85101917316