Strong and selective magnon-phonon coupling in the van der Waals antiferromagnet CoPS3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10512403" target="_blank" >RIV/00216208:11320/25:10512403 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sit6WLrj1B" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sit6WLrj1B</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/8f92-lt57" target="_blank" >10.1103/8f92-lt57</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Strong and selective magnon-phonon coupling in the van der Waals antiferromagnet CoPS3

Popis výsledku v původním jazyce

The Raman scattering response of the biaxial antiferromagnet CoPS(3) has been investigated as a function of both magnetic field and temperature. The peaks observed in the low-frequency spectral range (90-200 cm(-1)) have been identified as hybrid magnon-phonon excitations. The energies of the bare magnon and phonon modes and the effective coupling strengths between different excitation pairs have been determined. The strong and selective magnon-phonon interaction largely accounts for the pronounced splitting of two phononlike modes observed at 152 and 158 cm(-1) in the antiferromagnetic phase of CoPS(3). Based on the identification of bare magnon excitations and their magnetic-field dependence, we propose an updated set of parameters for the effective exchange (J(eff) = 9.9 meV) and biaxial magnetic anisotropy (D = 4.3 meV and E = -0.7 meV) and advocate for an apparent anisotropic g factor (g(x) = g(y) = 2, g(z) = 4) in the CoPS(3) antiferromagnet.

Název v anglickém jazyce

Strong and selective magnon-phonon coupling in the van der Waals antiferromagnet CoPS3

Popis výsledku anglicky

The Raman scattering response of the biaxial antiferromagnet CoPS(3) has been investigated as a function of both magnetic field and temperature. The peaks observed in the low-frequency spectral range (90-200 cm(-1)) have been identified as hybrid magnon-phonon excitations. The energies of the bare magnon and phonon modes and the effective coupling strengths between different excitation pairs have been determined. The strong and selective magnon-phonon interaction largely accounts for the pronounced splitting of two phononlike modes observed at 152 and 158 cm(-1) in the antiferromagnetic phase of CoPS(3). Based on the identification of bare magnon excitations and their magnetic-field dependence, we propose an updated set of parameters for the effective exchange (J(eff) = 9.9 meV) and biaxial magnetic anisotropy (D = 4.3 meV and E = -0.7 meV) and advocate for an apparent anisotropic g factor (g(x) = g(y) = 2, g(z) = 4) in the CoPS(3) antiferromagnet.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

2469-9969

Svazek periodika

112

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

165427

Kód UT WoS článku

001610486500003

EID výsledku v databázi Scopus

2-s2.0-105021242252