Abstract
Competition between exotic magnetic and electronic ground states underpins the properties of strongly correlated transition metal oxides and can result in electronic phase separation (EPS). The 6H-perovskite Ba3SrMo2O9 exhibits no magnetic order down to 1.6 K and EPS is observed at 230 K. The ground state of this material contains a complex mixture of spin-singlet Mo2O9 dimers and quasi-molecular Mo2O9 clusters. Segregation in Ba3SrMo2O9 emerges due to competition between
direct Mo–Mo bonding and Mo–O–Mo magnetic superexchange, comprising a novel mechanism of electronic phase separation in transition metal oxides.
direct Mo–Mo bonding and Mo–O–Mo magnetic superexchange, comprising a novel mechanism of electronic phase separation in transition metal oxides.
Original language | English |
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Article number | 024401 |
Journal | Physical Review Materials |
Volume | 6 |
Issue number | 2 |
Early online date | 3 Feb 2022 |
DOIs | |
Publication status | Published - 3 Feb 2022 |
Bibliographical note
ACKNOWLEDGEMENTSWe thank the Carnegie Trust for the Universities of Scotland for a PhD Scholarship for S.S. We acknowledge STFC-GB for provision of beamtime at the ILL. We also thank Dr. Mark Senn (University of Warwick) for useful discussions.
Keywords
- Crystal structure
- Exchange interaction
- Exotic phases of matter
- Phase separation
- Quantum phase transitions
- Second order phase transitions
- Crystal structures
- Crystallography
- Magnetization measurements
- Neutron diffraction