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Author Prayakarao, S. ♦ Noginov, M. A. ♦ Mendoza, B. ♦ Devine, A. ♦ Kyaw, C. ♦ Dover, R. B. van ♦ Liberman, V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ELECTRIC CONDUCTIVITY ♦ FORECASTING ♦ GOLD ♦ INTERACTIONS ♦ LAYERS ♦ METAMATERIALS ♦ PHASE TRANSFORMATIONS ♦ REFLECTION ♦ SEMICONDUCTOR MATERIALS ♦ SPECTRA ♦ TEMPERATURE CONTROL ♦ TEMPERATURE DEPENDENCE ♦ THIN FILMS ♦ TRANSMISSION ♦ VANADIUM OXIDES
Abstract Vanadium dioxide (VO{sub 2}) is known to have a semiconductor-to-metal phase transition at ∼68 °C. Therefore, it can be used as a tunable component of an active metamaterial. The lamellar metamaterial studied in this work is composed of subwavelength VO{sub 2} and Au layers and is designed to undergo a temperature controlled transition from the optical hyperbolic phase to the metallic phase. VO{sub 2} films and VO{sub 2}/Au lamellar metamaterial stacks have been fabricated and studied in electrical conductivity and optical (transmission and reflection) experiments. The observed temperature-dependent changes in the reflection and transmission spectra of the metamaterials and VO{sub 2} thin films are in a good qualitative agreement with theoretical predictions. The demonstrated optical hyperbolic-to-metallic phase transition is a unique physical phenomenon with the potential to enable advanced control of light-matter interactions.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-08-08
Publisher Place United States
Journal Applied Physics Letters
Volume Number 109
Issue Number 6


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