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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number195501
JournalJournal of Physics Condensed Matter
Volume24
Issue number19
DOIs
Publication statusPublished - May 16 2012
Externally publishedYes

Fingerprint

optical measurement
Phase transitions
Single crystals
reflectance
single crystals
vibration mode
transport properties
occurrences
electronic structure
Electron transport properties
Temperature
temperature dependence
anisotropy
polarization
Electronic structure
Anisotropy
Polarization

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Probing the metalinsulator phase transition in the (DMEDO-EBDT) 2PF 6 single crystal by optical measurements. / Ishikawa, T.; Kitayama, M.; Chono, A.; Onda, K.; Okimoto, Y.; Koshihara, S.; Nakano, Y.; Yamochi, H.; Morikawa, T.; Shirahata, T.; Misaki, Y.

In: Journal of Physics Condensed Matter, Vol. 24, No. 19, 195501, 16.05.2012.

Research output: Contribution to journalArticle

Ishikawa, T, Kitayama, M, Chono, A, Onda, K, Okimoto, Y, Koshihara, S, Nakano, Y, Yamochi, H, Morikawa, T, Shirahata, T & Misaki, Y 2012, 'Probing the metalinsulator phase transition in the (DMEDO-EBDT) 2PF 6 single crystal by optical measurements', Journal of Physics Condensed Matter, vol. 24, no. 19, 195501. https://doi.org/10.1088/0953-8984/24/19/195501
Ishikawa, T. ; Kitayama, M. ; Chono, A. ; Onda, K. ; Okimoto, Y. ; Koshihara, S. ; Nakano, Y. ; Yamochi, H. ; Morikawa, T. ; Shirahata, T. ; Misaki, Y. / Probing the metalinsulator phase transition in the (DMEDO-EBDT) 2PF 6 single crystal by optical measurements. In: Journal of Physics Condensed Matter. 2012 ; Vol. 24, No. 19.
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AU - Ishikawa, T.

AU - Kitayama, M.

AU - Chono, A.

AU - Onda, K.

AU - Okimoto, Y.

AU - Koshihara, S.

AU - Nakano, Y.

AU - Yamochi, H.

AU - Morikawa, T.

AU - Shirahata, T.

AU - Misaki, Y.

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