Transverse and longitudinal magnons in the strongly anisotropic antiferromagnet FePSe3

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10484478" target="_blank" >RIV/00216208:11320/24:10484478 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/24:43929961
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=xgtA_vRmd1" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=xgtA_vRmd1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.109.134410" target="_blank" >10.1103/PhysRevB.109.134410</a>

Result language
angličtina
Original language name
Transverse and longitudinal magnons in the strongly anisotropic antiferromagnet FePSe3
Original language description
FePSe(3) is a collinear honeycomb antiferromagnet with an easy-axis anisotropy and large spins S = 2. It belongs to a family of magnetic van der Waals materials which recently attracted considerable attention. In this work we present an experimental magneto-optical study of the low-energy excitation spectrum in FePSe(3), together with its theoretical description. The observed response contains several types of magnon excitations. Two of them are conventional transverse magnons described by a classical theory of antiferromagnetic resonance. Two other modes are identified as multimagnon hexadecapole excitations with an anomalous g factor approximately equal to 4 times the g factor of a single Fe(2+) ion. These quasiparticles correspond to full reversals of iron spins that coherently propagate in the up-down antiferromagnetic structure. They constitute a novel type of collective excitations in anisotropic magnetic solids, called longitudinal magnons. Comparison between theory and experiment allows us to estimate the microscopic parameters of FePSe(3), including exchange coupling constants and the single-ion anisotropy.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)