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Title: Tunable hyperbolic metamaterials utilizing phase change heterostructures

Abstract

We present a metal-free tunable anisotropic metamaterial where the iso-frequency surface is tuned from elliptical to hyperbolic dispersion by exploiting the metal-insulator phase transition in the correlated material vanadium dioxide (VO{sub 2}). Using VO{sub 2}-TiO{sub 2} heterostructures, we demonstrate the transition in the effective dielectric constant parallel to the layers to undergo a sign change from positive to negative as the VO{sub 2} undergoes the phase transition. The possibility to tune the iso-frequency surface in real time using external perturbations such as temperature, voltage, or optical pulses creates new avenues for controlling light-matter interaction.

Authors:
; ;  [1];  [2]
  1. School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)
  2. Birck Nanotechnology Center, School of Computer and Electrical Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)
Publication Date:
OSTI Identifier:
22258615
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTRIC POTENTIAL; PERMITTIVITY; PERTURBATION THEORY; PHASE TRANSFORMATIONS; SURFACES; TITANIUM OXIDES; VANADIUM OXIDES

Citation Formats

Krishnamoorthy, Harish N. S., Menon, Vinod M., E-mail: vmenon@qc.cuny.edu, Department of Physics, Graduate Center of the City University of New York, New York, New York 10016, Zhou, You, Ramanathan, Shriram, and Narimanov, Evgenii. Tunable hyperbolic metamaterials utilizing phase change heterostructures. United States: N. p., 2014. Web. doi:10.1063/1.4869297.
Krishnamoorthy, Harish N. S., Menon, Vinod M., E-mail: vmenon@qc.cuny.edu, Department of Physics, Graduate Center of the City University of New York, New York, New York 10016, Zhou, You, Ramanathan, Shriram, & Narimanov, Evgenii. Tunable hyperbolic metamaterials utilizing phase change heterostructures. United States. https://doi.org/10.1063/1.4869297
Krishnamoorthy, Harish N. S., Menon, Vinod M., E-mail: vmenon@qc.cuny.edu, Department of Physics, Graduate Center of the City University of New York, New York, New York 10016, Zhou, You, Ramanathan, Shriram, and Narimanov, Evgenii. 2014. "Tunable hyperbolic metamaterials utilizing phase change heterostructures". United States. https://doi.org/10.1063/1.4869297.
@article{osti_22258615,
title = {Tunable hyperbolic metamaterials utilizing phase change heterostructures},
author = {Krishnamoorthy, Harish N. S. and Menon, Vinod M., E-mail: vmenon@qc.cuny.edu and Department of Physics, Graduate Center of the City University of New York, New York, New York 10016 and Zhou, You and Ramanathan, Shriram and Narimanov, Evgenii},
abstractNote = {We present a metal-free tunable anisotropic metamaterial where the iso-frequency surface is tuned from elliptical to hyperbolic dispersion by exploiting the metal-insulator phase transition in the correlated material vanadium dioxide (VO{sub 2}). Using VO{sub 2}-TiO{sub 2} heterostructures, we demonstrate the transition in the effective dielectric constant parallel to the layers to undergo a sign change from positive to negative as the VO{sub 2} undergoes the phase transition. The possibility to tune the iso-frequency surface in real time using external perturbations such as temperature, voltage, or optical pulses creates new avenues for controlling light-matter interaction.},
doi = {10.1063/1.4869297},
url = {https://www.osti.gov/biblio/22258615}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 12,
volume = 104,
place = {United States},
year = {Mon Mar 24 00:00:00 EDT 2014},
month = {Mon Mar 24 00:00:00 EDT 2014}
}