High-Pressure Tuning of Magnon-Polarons in the Layered Antiferromagnet FePS3
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10453414" target="_blank" >RIV/00216208:11320/22:10453414 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=AmCNg6Sd05" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=AmCNg6Sd05</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.2c04286" target="_blank" >10.1021/acsnano.2c04286</a>
Alternative languages
Result language
angličtina
Original language name
High-Pressure Tuning of Magnon-Polarons in the Layered Antiferromagnet FePS3
Original language description
Magnetic layered materials have emerged recently as promising systems to introduce magnetism in structures based on two-dimensional (2D) materials and to investigate exotic magnetic ground states in the 2D limit. In this work, we apply high hydrostatic pressures up to P ~ 8.7 GPa to the bulk layered antiferromagnet FePS(3) to tune the collective lattice excitations (phonons) in resonance with magnetic excitations (magnons). Close to P = 4 GPa, the magnon-phonon resonance is achieved, and the strong coupling between these collective modes leads to the formation of new quasiparticles, the magnon-polarons, evidenced in our low-temperature Raman scattering experiments by a particular avoided crossing behavior between the phonon and the doubly degenerate antiferromagnetic magnon. At the pressure-induced magnon-phonon resonance, three distinct coupled modes emerge. As it is mainly defined by intralayer properties, we show that the energy of the magnon is nearly pressure-independent. We additionally apply high magnetic fields up to B = 30 T to fully identify and characterize the magnon excitations and to explore the different magnon-polaron regimes for which the phonon has an energy lower than, equal to, or higher than the magnon energy. The description of our experimental data requires introducing a phonon-phonon coupling not taken into account in actual calculations.
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
O - Projekt operacniho programu
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
ACS Nano [online]
ISSN
1936-086X
e-ISSN
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Volume of the periodical
16
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
12656-12665
UT code for WoS article
000836904500001
EID of the result in the Scopus database
2-s2.0-85135893635