Probing Defects and Spin‐Phonon Coupling in CrSBr via Resonant Raman Scattering
نویسندگان
چکیده
Understanding the stability limitations and defect formation mechanisms in 2D magnets is essential for their utilization spintronic memory technologies. Here, we correlate defects mono- to multilayer CrSBr with structural, vibrational magnetic properties. We use resonant Raman scattering reveal distinct signatures. In pristine CrSBr, show that bromine atoms mediate interlayer coupling, allowing distinguishing between surface bulk modes. environmental exposure causes drastic degradation monolayers, of intralayer defects. Through deliberate ion irradiation, tune modes, which are strongly polarized resonantly enhanced, reflecting quasi-1D electronic character CrSBr. Strikingly, observe pronounced signatures spin-phonon coupling intrinsic phonon modes beam induced throughout transition temperature. Overall, demonstrate shows air above monolayer threshold, provide further insight into physics present. Moreover, engineering properties spectroscopy can serve as a direct fingerprint phases
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ژورنال
عنوان ژورنال: Advanced Functional Materials
سال: 2023
ISSN: ['1616-301X', '1616-3028']
DOI: https://doi.org/10.1002/adfm.202211366