Origin of Magnetism in a Supposedly Nonmagnetic Osmium Oxide
A supposedly nonmagnetic 5d^{1} double perovskite 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.
Authors
- M. Moretti Sala (ORCID: https://orcid.org/0000-0002-9744-9976)
- Piero Florio (ORCID: https://orcid.org/0009-0005-5484-2259)
- Stefano Agrestini (ORCID: https://orcid.org/0000-0002-3625-880X)
- V. F. Mitrović (ORCID: https://orcid.org/0000-0001-8934-2282)
- F. Borgatti (ORCID: https://orcid.org/0000-0003-4659-4329)
- Ke‐Jin Zhou (ORCID: https://orcid.org/0000-0001-9293-0595)
- Dario Fiore Mosca (ORCID: https://orcid.org/0000-0003-2496-0455)
- Sonia Francoual (ORCID: https://orcid.org/0000-0002-5788-595X)
- Mirian García‐Fernández (ORCID: https://orcid.org/0000-0002-6982-9066)
- G. Ghiringhelli (ORCID: https://orcid.org/0000-0003-0867-7748)
- Christoph J. Sahle (ORCID: https://orcid.org/0000-0001-8645-3163)
- Cesare Franchini (ORCID: https://orcid.org/0000-0002-7990-2984)
- Jaewon Choi (ORCID: https://orcid.org/0000-0003-4616-4345)
- Quentin Faure (ORCID: https://orcid.org/0000-0003-1508-2363)
- Patrick M. Woodward (ORCID: https://orcid.org/0000-0002-3441-2148)
- F. Boscherini (ORCID: https://orcid.org/0000-0002-9703-3903)
- S. Sanna (ORCID: https://orcid.org/0000-0002-4077-5076)
- Blanka Detlefs (ORCID: https://orcid.org/0000-0002-9768-647X)
- Jonathan Frassineti (ORCID: https://orcid.org/0000-0002-0206-947X)
Institutions
- John Brown University (US)
- Brown University (US)
- Deutsches Elektronen-Synchrotron DESY (DE)
- European Synchrotron Radiation Facility (FR)
- Diamond Light Source (GB)
- Institute of Nanostructured Materials (IT)
- Institute of Structure of Matter (IT)
- Institut Polytechnique de Paris (FR)
- The Ohio State University (US)
- University of Bologna (IT)
- Politecnico di Milano (IT)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2024-08-05
- DOI
- https://doi.org/10.1103/physrevlett.133.066501
- Citations
- 15
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 4.66
Funders
- National Science Foundation
- Diamond Light Source
- European Commission
- Helmholtz-Gemeinschaft
- European Synchrotron Radiation Facility
- Bundesministerium für Bildung und Forschung
- Materials Research Science and Engineering Center, Harvard University
- Deutsches Elektronen-Synchrotron
- Division of Materials Research