Počet záznamů: 1
Resonance Raman scattering and anomalous anti-Stokes phenomena in CrSBr
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SYSNO ASEP 0619390 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Resonance Raman scattering and anomalous anti-Stokes phenomena in CrSBr Tvůrce(i) Sahu, Satyam (UFCH-W)
Berrezueta-Palacios, C. (DE)
Juergensen, S. (DE)
Mosina, K. (CZ)
Sofer, Z. (CZ)
Velický, Matěj (UFCH-W) ORCID, RID, SAI
Kusch, P. (DE)
Frank, Otakar (UFCH-W) RID, ORCIDZdroj.dok. Nanoscale. - : Royal Society of Chemistry - ISSN 2040-3364
(2025)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova temperature-dependent raman ; waals ; spectra Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GF23-06174K GA ČR - Grantová agentura ČR EH22_008/0004558 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UFCH-W - RVO:61388955 UT WOS 001467782200001 DOI https://doi.org/10.1039/d5nr00562k Anotace 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. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2026 Elektronická adresa https://hdl.handle.net/11104/0366124
Počet záznamů: 1