skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO 3 layers

Abstract

Here, we demonstrate a metamaterial exhibiting a frequency-tunable response in the terahertz domain, controlled by a bias electric field. The active part of the metamaterial consists of a periodic metallic pattern deposited on a thin epitaxially strained strontium titanate film. The role of the metallic structure is two-fold: it gives rise to the metamaterial resonance and it enables applying an electric bias to the strontium titanate layer. The strained film exhibits a pronounced dependence of its permittivity on the bias, which exerts a strong influence on the resonance. Specifically, the resonance of our structure occurs near 0.5 THz and, upon applying a bias voltage of 55 V, a relative tunability of the resonance frequency of 19% was achieved at room temperature.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2];  [1];  [1];  [1]
  1. Czech Academy of Sciences, Prague (Czech Republic)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1481152
Report Number(s):
LA-UR-18-29547
Journal ID: ISSN 0022-3727
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physics. D, Applied Physics
Additional Journal Information:
Journal Volume: 51; Journal Issue: 5; Journal ID: ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Material Science; tunable metamaterial; metasurfaces; strontium titanate; epitaxial thin films; terahertz waves

Citation Formats

Kadlec, Christelle, Skoromets, Volodymyr, Kadlec, Filip, Němec, Hynek, Chen, Hou -Tong, Jurka, Vlastimil, Hruška, Karel, and Kužel, Petr. Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO3 layers. United States: N. p., 2018. Web. doi:10.1088/1361-6463/aaa315.
Kadlec, Christelle, Skoromets, Volodymyr, Kadlec, Filip, Němec, Hynek, Chen, Hou -Tong, Jurka, Vlastimil, Hruška, Karel, & Kužel, Petr. Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO3 layers. United States. doi:10.1088/1361-6463/aaa315.
Kadlec, Christelle, Skoromets, Volodymyr, Kadlec, Filip, Němec, Hynek, Chen, Hou -Tong, Jurka, Vlastimil, Hruška, Karel, and Kužel, Petr. Thu . "Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO3 layers". United States. doi:10.1088/1361-6463/aaa315. https://www.osti.gov/servlets/purl/1481152.
@article{osti_1481152,
title = {Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO3 layers},
author = {Kadlec, Christelle and Skoromets, Volodymyr and Kadlec, Filip and Němec, Hynek and Chen, Hou -Tong and Jurka, Vlastimil and Hruška, Karel and Kužel, Petr},
abstractNote = {Here, we demonstrate a metamaterial exhibiting a frequency-tunable response in the terahertz domain, controlled by a bias electric field. The active part of the metamaterial consists of a periodic metallic pattern deposited on a thin epitaxially strained strontium titanate film. The role of the metallic structure is two-fold: it gives rise to the metamaterial resonance and it enables applying an electric bias to the strontium titanate layer. The strained film exhibits a pronounced dependence of its permittivity on the bias, which exerts a strong influence on the resonance. Specifically, the resonance of our structure occurs near 0.5 THz and, upon applying a bias voltage of 55 V, a relative tunability of the resonance frequency of 19% was achieved at room temperature.},
doi = {10.1088/1361-6463/aaa315},
journal = {Journal of Physics. D, Applied Physics},
issn = {0022-3727},
number = 5,
volume = 51,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1. Figure 1.: (a) Schematic view of the frequency-tunable THz metamaterial structure. Two SrTiO3 /DyScO3 epitaxial bilayers are deposited on a single-crystal (110) DyScO3 substrate, and the patterned metallic resonators on top of the heterostructure also serve as electrodes. (b) SEM image of the fabricated metamaterial structure. (c) Diagram of themore » top view with a dc bias applied to the electrodes. The shaded areas mark parts with different field intensities, for which appropriate permittivity spectra ε (E) corresponding to field values of 0, E = U/d, and E = U/a = U/9d were used in the simulations.« less

Save / Share:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.