Probing the metalinsulator phase transition in the (DMEDO-EBDT) 2PF 6 single crystal by optical measurements

T. Ishikawa, M. Kitayama, A. Chono, K. Onda, Y. Okimoto, S. Koshihara, Y. Nakano, H. Yamochi, T. Morikawa, T. Shirahata, Y. Misaki

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)


The temperature and polarization dependence of the optical reflectivity spectra of a quasi-one-dimensional 1/4-filled band system, (DMEDO-EBDT) 2PF 6, have been investigated. We observed clear anisotropy in the electronic structures corresponding to the anisotropic transport properties. The appearance of a charge gap (E g>0.1eV) and transfer of the spectral weight accompanied by the metalinsulator phase transition were clearly observed. In addition, a split of the intramolecular vibrational modes was observed, which strongly suggested the existence of charge disproportionation in the low temperature phase. We also observed a photoinduced reflectivity change, which implied the occurrence of a photoinduced phase transition from the low temperature insulating phase to the high temperature metallic phase.

ジャーナルJournal of Physics Condensed Matter
出版ステータス出版済み - 5 16 2012

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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