Metal-insulator transition in VO2 studied by optical spectroscopy

Kozo Okazaki; Shunji Sugai; Yuji Muraoka; Zenji Hiroi

doi:10.1063/1.2355148

Metal-insulator transition in VO₂ studied by optical spectroscopy

Kozo Okazaki, Shunji Sugai, Yuji Muraoka, Zenji Hiroi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 strong temperature dependence. We attribute this to the electron-phonon interaction as in the photoemission spectra.

Original language	English
Title of host publication	LOW TEMPERATURE PHYSICS
Subtitle of host publication	24th International Conference on Low Temperature Physics - LT24
Pages	1229-1230
Number of pages	2
DOIs	https://doi.org/10.1063/1.2355148
Publication status	Published - Dec 1 2006
Externally published	Yes
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: Aug 10 2006 → Oct 17 2006

Publication series

Name	AIP Conference Proceedings
Volume	850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	8/10/06 → 10/17/06

Keywords

Electron-electron interaction
Electron-phonon interaction
Metal-insulator transition
Optical conductivity
VO

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2355148

Cite this

Okazaki, K, Sugai, S, Muraoka, Y & Hiroi, Z 2006, Metal-insulator transition in VO₂ studied by optical spectroscopy. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP Conference Proceedings, vol. 850, pp. 1229-1230, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 8/10/06. https://doi.org/10.1063/1.2355148

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N2 - 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 strong temperature dependence. We attribute this to the electron-phonon interaction as in the photoemission spectra.

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