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  • Kimber, Simon A. J., et al. (author)
  • Charge Order at the Frontier between the Molecular and Solid States in Ba3NaRu2O9
  • 2012
  • In: Physical Review Letters. - 1079-7114. ; 108:21
  • Journal article (peer-reviewed)abstract
    • We show that the valence electrons of Ba3NaRu2O9, which has a quasimolecular structure, completely crystallize below 210 K. Using an extended Hubbard model, we show that the charge ordering instability results from long-range Coulomb interactions. However, orbital ordering, metal-metal bonding, and formation of a partial spin gap enforce the magnitude of the charge separation. The striped charge order and frustrated hcp lattice of Ru2O9 dimers lead to competition with a quasidegenerate charge-melted phase under photoexcitation at low temperature. Our results establish a broad class of simple metal oxides as models for emergent phenomena at the border between the molecular and solid states.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Manuel, Pascal (1)
Argyriou, Dimitri (1)
Henry, Paul (1)
Kimber, Simon A. J. (1)
Fratini, Simone (1)
Wu, Hua (1)
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Senn, Mark S. (1)
Hill, Adrian H. (1)
Attfield, J. Paul (1)
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University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2012 (1)

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