Resonance Raman scattering and anomalous anti-Stokes phenomena in CrSBr

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F25%3A00619390" target="_blank" >RIV/61388955:_____/25:00619390 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/25:10497982 RIV/60461373:22310/25:43932171

Výsledek na webu

<a href="https://hdl.handle.net/11104/0366124" target="_blank" >https://hdl.handle.net/11104/0366124</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d5nr00562k" target="_blank" >10.1039/d5nr00562k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Resonance Raman scattering and anomalous anti-Stokes phenomena in CrSBr

Popis výsledku v původním jazyce

CrSBr, a van der Waals material, stands out as an air-stable magnetic semiconductor with appealing intrinsic properties such as crystalline anisotropy, quasi-1D electronic characteristics, layer-dependent antiferromagnetism, and non-linear optical effects. We investigate the differences between the absorption and emission spectra, focusing on the origin of the emission peak near 1.7 eV observed in the photoluminescence spectrum of CrSBr. Our findings are corroborated by excitation energy-dependent Raman experiments. Additionally, we explore the anti-Stokes Raman spectra and observe an anomalously high anti-Stokes-to-Stokes intensity ratio of up to 0.8, which varies significantly with excitation laser power and crystallographic orientation relative to the polarization of the scattered light, highlighting the unique vibrational and electronic interactions in CrSBr. Lastly, we examine stimulated Raman scattering and calculate the Raman gain in CrSBr, which attains a value of 1 x 108 cm GW-1, nearly four orders of magnitude higher than that of previously studied three-dimensional systems.

Název v anglickém jazyce

Resonance Raman scattering and anomalous anti-Stokes phenomena in CrSBr

Popis výsledku anglicky

CrSBr, a van der Waals material, stands out as an air-stable magnetic semiconductor with appealing intrinsic properties such as crystalline anisotropy, quasi-1D electronic characteristics, layer-dependent antiferromagnetism, and non-linear optical effects. We investigate the differences between the absorption and emission spectra, focusing on the origin of the emission peak near 1.7 eV observed in the photoluminescence spectrum of CrSBr. Our findings are corroborated by excitation energy-dependent Raman experiments. Additionally, we explore the anti-Stokes Raman spectra and observe an anomalously high anti-Stokes-to-Stokes intensity ratio of up to 0.8, which varies significantly with excitation laser power and crystallographic orientation relative to the polarization of the scattered light, highlighting the unique vibrational and electronic interactions in CrSBr. Lastly, we examine stimulated Raman scattering and calculate the Raman gain in CrSBr, which attains a value of 1 x 108 cm GW-1, nearly four orders of magnitude higher than that of previously studied three-dimensional systems.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Svazek periodika

17

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

11539-11546

Kód UT WoS článku

001467782200001

EID výsledku v databázi Scopus

2-s2.0-105003882023