Terahertz excitation of exchange mode in a cavity formed by crystal interfaces
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00619796" target="_blank" >RIV/68378271:_____/25:00619796 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.111.184412" target="_blank" >https://doi.org/10.1103/PhysRevB.111.184412</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.111.184412" target="_blank" >10.1103/PhysRevB.111.184412</a>
Alternative languages
Result language
angličtina
Original language name
Terahertz excitation of exchange mode in a cavity formed by crystal interfaces
Original language description
he interaction of terahertz (THz) radiation with high-frequency spin resonances in complex magnetic materials is central for modern ultrafast magnonics. Here we demonstrate strong variations of the excitation efficiency of the sub-THz exchange magnon in a single crystal gadolinium iron garnet (Gd,Bi)3Fe5O12. An enhancement of the exchange magnon amplitude is observed when its frequency matches an eigenmode of the cavity created by the sample interfaces. Moreover, this enhancement is accompanied by a fivefold decrease in effective damping of the exchange mode. The THz-exchange magnon interaction in the cavity is analyzed within the developed Landau–Lifshitz–Gilbert formalism for three coupled magnetization sublattices and cavity-enhanced THz field. This work presents an approach for the THz excitation of magnetization dynamics in ferrimagnets and outlines promising pathways for the controlled optimization of light-magnetization coupling in single crystals.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
111
Issue of the periodical within the volume
18
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
184412
UT code for WoS article
001494395200002
EID of the result in the Scopus database
2-s2.0-105005143904