Anisotropic Magneto-Optical Raman Response Coupled with Magnetic Ordering in an A-Type Antiferromagnet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43932252" target="_blank" >RIV/60461373:22310/25:43932252 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5c02773" target="_blank" >https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5c02773</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.nanolett.5c02773" target="_blank" >10.1021/acs.nanolett.5c02773</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Anisotropic Magneto-Optical Raman Response Coupled with Magnetic Ordering in an A-Type Antiferromagnet

Popis výsledku v původním jazyce

Magneto-optical effects serve as powerful tools for probing magnetic order and spin-related couplings, yet anisotropic spin-phonon coupling in low-dimensional systems remains underexplored. Here, we uncover an anisotropic magneto-optical Raman response in the A-type van der Waals antiferromagnet CrSBr, where intrinsic lattice anisotropy and quasi-one-dimensional magnetism enable anisotropic spin-phonon interactions. Using polarization- and angle-resolved Raman spectroscopy, we identify that the ratio |b/a| of the A g 2 mode&apos;s Raman tensor elements undergoes a dramatic change across the Neel temperature, serving as a hallmark of the paramagnetic-to-antiferromagnetic phase transition. Under an out-of-plane magnetic field, this ratio varies continuously with spin canting, reflecting changes in spin configuration. Crucially, we elucidate that magnetic ordering selectively modulates the anisotropic electron-phonon coupling predominantly along the b-axis. Our work advances polarization- and angle-resolved Raman spectroscopy as a sensitive probe of anisotropic spin-phonon physics and pioneers the development of opto-spintronic devices with direction-selective magneto-optical functionality.

Název v anglickém jazyce

Anisotropic Magneto-Optical Raman Response Coupled with Magnetic Ordering in an A-Type Antiferromagnet

Popis výsledku anglicky

Magneto-optical effects serve as powerful tools for probing magnetic order and spin-related couplings, yet anisotropic spin-phonon coupling in low-dimensional systems remains underexplored. Here, we uncover an anisotropic magneto-optical Raman response in the A-type van der Waals antiferromagnet CrSBr, where intrinsic lattice anisotropy and quasi-one-dimensional magnetism enable anisotropic spin-phonon interactions. Using polarization- and angle-resolved Raman spectroscopy, we identify that the ratio |b/a| of the A g 2 mode&apos;s Raman tensor elements undergoes a dramatic change across the Neel temperature, serving as a hallmark of the paramagnetic-to-antiferromagnetic phase transition. Under an out-of-plane magnetic field, this ratio varies continuously with spin canting, reflecting changes in spin configuration. Crucially, we elucidate that magnetic ordering selectively modulates the anisotropic electron-phonon coupling predominantly along the b-axis. Our work advances polarization- and angle-resolved Raman spectroscopy as a sensitive probe of anisotropic spin-phonon physics and pioneers the development of opto-spintronic devices with direction-selective magneto-optical functionality.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

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

NANO LETTERS

ISSN

1530-6984

e-ISSN

1530-6992

Svazek periodika

25

Číslo periodika v rámci svazku

33

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

"12570–12577"

Kód UT WoS článku

001547375400001

EID výsledku v databázi Scopus

2-s2.0-105013808202