Spin-Phonon Renormalization in CrSBr
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866915934490329088 |
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| author | Ranhili, Jayajeewana N. Pathiraja, Chamini S. Brogdon, Brody Cenker, John Xu, Xiadong Chica, Daniel Roy, Xavier Agrestini, Stefano Garcia-Fernandez, Mirian Zhou, Ke-Jin Chuang, Yi-De Datta, Trinanjan Freelon, Byron |
| author_facet | Ranhili, Jayajeewana N. Pathiraja, Chamini S. Brogdon, Brody Cenker, John Xu, Xiadong Chica, Daniel Roy, Xavier Agrestini, Stefano Garcia-Fernandez, Mirian Zhou, Ke-Jin Chuang, Yi-De Datta, Trinanjan Freelon, Byron |
| contents | Direct experimental evidence of spin-phonon coupling in CrSBr is provided by the temperature dependent Cr L-edge resonant inelastic x-ray scattering (RIXS) spectra. Zone-center optical phonons are observed exclusively in the low-temperature antiferromagnetic phase as energy loss features. These phonon modes have energies of approximately, 43.5 meV and 43.1 meV for x-rays that are σ-polarized along the a and b axes, respectively. While a phonon mode of approximately 42.1 meV is observed under π-polarization. Density functional theory and phonon mode calculations identify these features as bond-bending optical phonon modes arising in the RIXS spectra. Room temperature melting of these low-energy RIXS peaks is explained in terms of a spin-phonon renormalization effect on the L-edge electron-phonon RIXS mechanism. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2604_06042 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Spin-Phonon Renormalization in CrSBr Ranhili, Jayajeewana N. Pathiraja, Chamini S. Brogdon, Brody Cenker, John Xu, Xiadong Chica, Daniel Roy, Xavier Agrestini, Stefano Garcia-Fernandez, Mirian Zhou, Ke-Jin Chuang, Yi-De Datta, Trinanjan Freelon, Byron Materials Science Direct experimental evidence of spin-phonon coupling in CrSBr is provided by the temperature dependent Cr L-edge resonant inelastic x-ray scattering (RIXS) spectra. Zone-center optical phonons are observed exclusively in the low-temperature antiferromagnetic phase as energy loss features. These phonon modes have energies of approximately, 43.5 meV and 43.1 meV for x-rays that are σ-polarized along the a and b axes, respectively. While a phonon mode of approximately 42.1 meV is observed under π-polarization. Density functional theory and phonon mode calculations identify these features as bond-bending optical phonon modes arising in the RIXS spectra. Room temperature melting of these low-energy RIXS peaks is explained in terms of a spin-phonon renormalization effect on the L-edge electron-phonon RIXS mechanism. |
| title | Spin-Phonon Renormalization in CrSBr |
| topic | Materials Science |
| url | https://arxiv.org/abs/2604.06042 |