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

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

2006-03-13

arxiv.org/abs/cond-mat/0603339v1

Phys. Rev. B 73, 165116 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 8 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.73.165116

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.

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