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Sökning: WFRF:(Kimber S) > Naturvetenskap

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1.
  • Kimber, Simon A. J., et al. (författare)
  • Charge Order at the Frontier between the Molecular and Solid States in Ba3NaRu2O9
  • 2012
  • Ingår i: Physical Review Letters. - 1079-7114. ; 108:21
  • Tidskriftsartikel (refereegranskat)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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2.
  • Andersson, Bo, et al. (författare)
  • Small x phenomenology: summary and status
  • 2002
  • Ingår i: European Physical Journal C. Particles and Fields. - : Springer Science and Business Media LLC. - 1434-6044. ; 25:1, s. 77-101
  • Forskningsöversikt (refereegranskat)abstract
    • The aim of this paper is to summarize the general status of our understanding of small-x physics. It is based on presentations and discussions at an informal meeting OIL this topic held in Lund, Sweden, in March 2001. This document also marks the founding of an informal collaboration between experimentalists and theoreticians with a special interest in small-x physics. This paper is dedicated to the memory of Bo Andersson. who died unexpectedly from a heart attack on March 4th, 2002.
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