Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO3 layers
- Czech Academy of Sciences, Prague (Czech Republic)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1481152
- Report Number(s):
- LA-UR-18-29547
- Journal Information:
- Journal of Physics. D, Applied Physics, Vol. 51, Issue 5; ISSN 0022-3727
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Dynamic Terahertz Plasmonics Enabled by Phase‐Change Materials
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journal | August 2019 |
A thermally tunable THz metamaterial frequency-selective surface based on barium strontium titanate thin film
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journal | November 2018 |
Tunable strontium titanate terahertz all-dielectric metamaterials
|
journal | February 2020 |
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