Symmetry breaking in the metal-insulator transition of BaVS3

T. Inami, K. Ohwada, H. Kimura, M. Watanabe, Y. Noda, H. Nakamura, T. Yamasaki, M. Shiga, N. Ikeda, Y. Murakami, Y. Murakami

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


It has been believed for a long time that the metal-to-insulator (MI) transition of BaVS3 is not accompanied by any spatial order of the spin and lattice. We have carried out x-ray-diffraction measurements of BaVS3 single crystals using a laboratory x-ray source as well as synchrotron radiation, and found that superlattice reflections which double the lattice constant c exist below the transition temperature. The most probable space group at the low-temperature insulator phase contains two inequivalent vanadium sites, and thus a charge disproportionation of the vanadium ions is considered the main cause of the MI transition.

Original languageEnglish
Article number073108
Pages (from-to)731081-731084
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number7
Publication statusPublished - Aug 15 2002
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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