Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO3 layers

doi:10.1088/1361-6463/aaa315

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:

^[1]; Skoromets, Volodymyr ^[1];

^[1];

^[2]; Jurka, Vlastimil ^[1]; Hruška, Karel ^[1]; Kužel, Petr ^[1]

Czech Academy of Sciences, Prague (Czech Republic)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:: 2018-01-11

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.

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                    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.

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                    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.

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@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}

}

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DOI: 10.1088/1361-6463/aaa315

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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 »

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

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