Resonant x-ray spectroscopies on CrSBr: Probing the electronic structure through chromium d-d excitations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933858" target="_blank" >RIV/60461373:22310/25:43933858 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prb/abstract/10.1103/pdvz-6cpg" target="_blank" >https://journals.aps.org/prb/abstract/10.1103/pdvz-6cpg</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/pdvz-6cpg" target="_blank" >10.1103/pdvz-6cpg</a>

Result language
angličtina
Original language name
Resonant x-ray spectroscopies on CrSBr: Probing the electronic structure through chromium d-d excitations
Original language description
We investigate the Cr electronic structure and excitations in CrSBr, a layered magnetic semiconductor, using a combination of resonant x-ray spectroscopic techniques. X-ray absorption spectroscopy and resonant inelastic x-ray scattering (RIXS) spectra collected at the Cr L2,3 edges reveal significant linear dichroism, which arises from the distorted octahedral environment surrounding the Cr3+ ions. The origin of the bright excitons observed in this compound is examined through a comparison of the d-d excitations identified in the RIXS spectra, the x-ray excited optical luminescence spectra, and previously reported optical spectroscopic and theoretical studies. To further understand these phenomena, we develop a multiplet model based on a crystal electric field approach that accounts for the local environment of Cr ions. This model successfully reproduces several experimental features, while also suggesting strong hybridization effects between Cr 3d orbitals and ligands that are not fully captured by the present framework. These findings advance our understanding of the electronic structure and excitonic behavior in CrSBr and provide a foundation for future in situ and operando studies of CrSBr-based devices for spintronic and optoelectronic applications.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences

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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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