Ferromagnetism in the Mott Insulator
- 6 July 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 99 (1), 016404
- https://doi.org/10.1103/physrevlett.99.016404
Abstract
Results are presented of single crystal structural, thermodynamic, and reflectivity measurements of the double-perovskite . These characterize the material as a ferromagnetic Mott insulator with an ordered moment of per formula unit and . The magnetic entropy associated with this phase transition is close to , indicating that the quartet ground state anticipated from consideration of the crystal structure is split, consistent with a scenario in which the ferromagnetism is associated with orbital ordering.
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