The origin of magnetism in a supposedly nonmagnetic osmium oxide
Fuente:
arXiv
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| Autori principali: | , , , , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929475025895424 |
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| author | Agrestini, S. Borgatti, F. Florio, P. Frassineti, J. Mosca, D. Fiore Faure, Q. Detlefs, B. Sahle, C. J. Francoual, S. Choi, J. Garcia-Fernandez, M. Zhou, K. -J. Mitrovic, V. F. Woodward, P. M. Ghiringhelli, G. Franchini, C. Boscherini, F. Sanna, S. Sala, and M. Moretti |
| author_facet | Agrestini, S. Borgatti, F. Florio, P. Frassineti, J. Mosca, D. Fiore Faure, Q. Detlefs, B. Sahle, C. J. Francoual, S. Choi, J. Garcia-Fernandez, M. Zhou, K. -J. Mitrovic, V. F. Woodward, P. M. Ghiringhelli, G. Franchini, C. Boscherini, F. Sanna, S. Sala, and M. Moretti |
| contents | A supposedly nonmagnetic 5d$^1$ double perosvkite oxide is investigated by a combination of spectroscopic and theoretical methods, namely resonant inelastic X-ray scattering, X-ray absorption spectroscopy, magnetic circular dichroism, and multiplet ligand field calculations. We found that the large spin-orbit coupling admixes the 5d $t_{2g}$ and $e_g$ orbitals, covalency raises the 5d population well above the nominal value, and the local symmetry is lower than $O_h$. The obtained electronic interactions account for the finite magnetic moment of Os in this compound and, in general, of 5d$^1$ ions. Our results provide direct evidence of elusive Jahn-Teller distortions, hinting at a strong electron-lattice coupling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12035 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The origin of magnetism in a supposedly nonmagnetic osmium oxide Agrestini, S. Borgatti, F. Florio, P. Frassineti, J. Mosca, D. Fiore Faure, Q. Detlefs, B. Sahle, C. J. Francoual, S. Choi, J. Garcia-Fernandez, M. Zhou, K. -J. Mitrovic, V. F. Woodward, P. M. Ghiringhelli, G. Franchini, C. Boscherini, F. Sanna, S. Sala, and M. Moretti Strongly Correlated Electrons A supposedly nonmagnetic 5d$^1$ double perosvkite oxide is investigated by a combination of spectroscopic and theoretical methods, namely resonant inelastic X-ray scattering, X-ray absorption spectroscopy, magnetic circular dichroism, and multiplet ligand field calculations. We found that the large spin-orbit coupling admixes the 5d $t_{2g}$ and $e_g$ orbitals, covalency raises the 5d population well above the nominal value, and the local symmetry is lower than $O_h$. The obtained electronic interactions account for the finite magnetic moment of Os in this compound and, in general, of 5d$^1$ ions. Our results provide direct evidence of elusive Jahn-Teller distortions, hinting at a strong electron-lattice coupling. |
| title | The origin of magnetism in a supposedly nonmagnetic osmium oxide |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2401.12035 |