Pressure-induced spin-state ordering in Sr2CoO3F

We study theoretically low-temperature phases of a recently synthesized compound Sr2CoO3F under pressure. The analysis combining LDA+DMFT and a strong-coupling effective model points to the existence of not only normal paramagnetic and antiferromagnetic regimes, but also a spin-state ordered phase i...

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Bibliographic Details
Published in:Physical review. B 2019-05, Vol.99 (20), p.205118
Main Authors: Afonso, Juan Fernández, Sotnikov, Andrii, Hariki, Atsushi, Kuneš, Jan
Format: Article
Language:English
Subjects:
Antiferromagnetism
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Summary:We study theoretically low-temperature phases of a recently synthesized compound Sr2CoO3F under pressure. The analysis combining LDA+DMFT and a strong-coupling effective model points to the existence of not only normal paramagnetic and antiferromagnetic regimes, but also a spin-state ordered phase in a certain range of applied pressure and low temperature. This order is characterized by a checkerboard arrangement of different spin states of cobalt atoms in the lattice.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.99.205118