Pressure-induced spin-state ordering in Sr$_2$CoO$_3$F

Juan Fernández Afonso; Andrii Sotnikov; Atsushi Hariki; Jan Kuneš

doi:10.1103/PhysRevB.99.205118

Pressure-induced spin-state ordering in Sr$_2$CoO$_3$F

Strongly Correlated Electrons 2019-05-15 v2

Authors: Juan Fernández Afonso , Andrii Sotnikov , Atsushi Hariki , Jan Kuneš

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Abstract

We study theoretically low-temperature phases of a recently synthesized compound Sr $_2$ CoO $_3$ F 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.

Keywords

spin-state order Sr2CoO3F pressure effect LDA+DMFT checkerboard arrangement low-temperature phase

Cite

@article{arxiv.1902.06509,
  title  = {Pressure-induced spin-state ordering in Sr$_2$CoO$_3$F},
  author = {Juan Fernández Afonso and Andrii Sotnikov and Atsushi Hariki and Jan Kuneš},
  journal= {arXiv preprint arXiv:1902.06509},
  year   = {2019}
}

Comments

7 pages, 7 figures

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