Role of electron-electron and electron-phonon interaction effects in the optical conductivity of VO2

K. Okazaki, S. Sugai, Yuji Muraoka, Z. Hiroi

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

We have investigated the charge dynamics of VO2 by optical reflectivity measurements. Optical conductivity clearly shows a metal-insulator transition. In the metallic phase, a broad Drude-like structure is observed. On the other hand, in the insulating phase, a broad peak structure around 1.3 eV is observed. It is found that this broad structure observed in the insulating phase shows a temperature dependence. We attribute this to the electron-phonon interaction as in the photoemission spectra.

Original languageEnglish
Article number165116
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number16
DOIs
Publication statusPublished - 2006
Externally publishedYes

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Optical conductivity
Electron-phonon interactions
Metal insulator transition
Photoemission
electron phonon interactions
photoelectric emission
insulators
reflectance
conductivity
temperature dependence
Electrons
metals
electrons
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Role of electron-electron and electron-phonon interaction effects in the optical conductivity of VO2. / Okazaki, K.; Sugai, S.; Muraoka, Yuji; Hiroi, Z.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 73, No. 16, 165116, 2006.

Research output: Contribution to journalArticle

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