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Title: Optical properties of VO{sub 2} films at the phase transition: Influence of substrate and electronic correlations

Abstract

Thin films of VO{sub 2} on different substrates, Al{sub 2}O{sub 3} and SiO{sub 2}/Si, have been prepared and characterized from room temperature up to 360 K. From the band structure in the rutile metallic phase and in the monoclinic insulating phase, the optical properties are calculated and compared with reflection measurements performed as a function of temperatures. Various interband transitions can be assigned and compared with previous speculations. We extract the parameters of the metallic charge carriers that evolve upon crossing the insulator-to-metal phase transition and find effects by the substrate. The influence of electronic correlations becomes obvious at the phase transition.

Authors:
;  [1]; ;  [2]
  1. 1. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart (Germany)
  2. I. Physikalisches Institut, Justus-Liebig Universität Gießen, Heinrich-Buff-Ring 16, 35392 Gießen (Germany)
Publication Date:
OSTI Identifier:
22598864
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM OXIDES; CHARGE CARRIERS; COMPARATIVE EVALUATIONS; ENERGY-LEVEL TRANSITIONS; METALS; MONOCLINIC LATTICES; OPTICAL PROPERTIES; PHASE TRANSFORMATIONS; RUTILE; SILICA; SILICON OXIDES; SUBSTRATES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; VANADIUM OXIDES

Citation Formats

Peterseim, Tobias, Dressel, Martin, Dietrich, Marc, and Polity, Angelika. Optical properties of VO{sub 2} films at the phase transition: Influence of substrate and electronic correlations. United States: N. p., 2016. Web. doi:10.1063/1.4961406.
Peterseim, Tobias, Dressel, Martin, Dietrich, Marc, & Polity, Angelika. Optical properties of VO{sub 2} films at the phase transition: Influence of substrate and electronic correlations. United States. doi:10.1063/1.4961406.
Peterseim, Tobias, Dressel, Martin, Dietrich, Marc, and Polity, Angelika. Sun . "Optical properties of VO{sub 2} films at the phase transition: Influence of substrate and electronic correlations". United States. doi:10.1063/1.4961406.
@article{osti_22598864,
title = {Optical properties of VO{sub 2} films at the phase transition: Influence of substrate and electronic correlations},
author = {Peterseim, Tobias and Dressel, Martin and Dietrich, Marc and Polity, Angelika},
abstractNote = {Thin films of VO{sub 2} on different substrates, Al{sub 2}O{sub 3} and SiO{sub 2}/Si, have been prepared and characterized from room temperature up to 360 K. From the band structure in the rutile metallic phase and in the monoclinic insulating phase, the optical properties are calculated and compared with reflection measurements performed as a function of temperatures. Various interband transitions can be assigned and compared with previous speculations. We extract the parameters of the metallic charge carriers that evolve upon crossing the insulator-to-metal phase transition and find effects by the substrate. The influence of electronic correlations becomes obvious at the phase transition.},
doi = {10.1063/1.4961406},
journal = {Journal of Applied Physics},
number = 7,
volume = 120,
place = {United States},
year = {Sun Aug 21 00:00:00 EDT 2016},
month = {Sun Aug 21 00:00:00 EDT 2016}
}