The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Charge Order at the Frontier between the Molecular and Solid States in Ba3NaRu2O9

På svenska

Author

  • Simon A. J. Kimber
  • Mark S. Senn
  • Simone Fratini
  • Hua Wu
  • Adrian H. Hill
  • Pascal Manuel
  • J. Paul Attfield
  • Dimitri Argyriou
  • Paul Henry

Summary, in English

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.

Publishing year

2012

Language

English

Publication/Series

Physical Review Letters

Volume

108

Issue

21

Document type

Journal article

Publisher

American Physical Society

Topic

  • Natural Sciences
  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 1079-7114