Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Terahertz Resonators based on Y-Ba-Cu-O High-Tc Superconductor

Version 1 : Received: 27 July 2022 / Approved: 28 July 2022 / Online: 28 July 2022 (07:28:04 CEST)

How to cite: Macis, S.; Paolozzi, M.C.; D'Arco, A.; Tomarchio, L.; Di Gaspare, A.; Lupi, S. Terahertz Resonators based on Y-Ba-Cu-O High-Tc Superconductor. Preprints 2022, 2022070431 (doi: 10.20944/preprints202207.0431.v1). Macis, S.; Paolozzi, M.C.; D'Arco, A.; Tomarchio, L.; Di Gaspare, A.; Lupi, S. Terahertz Resonators based on Y-Ba-Cu-O High-Tc Superconductor. Preprints 2022, 2022070431 (doi: 10.20944/preprints202207.0431.v1).

Abstract

Superconducting split ring resonator arrays allow to overcome two main limitations affecting metallic metamaterial resonating in the Terahertz (THz) range: Ohmic losses and tunability of their optical response. In this work, we design and experimentally realize direct and complementary square arrays of superconducting YBa2Cu3O7 (YBCO) split ring resonators working in the THz spectral range. The main purpose of this paper is to show how the metamaterial resonances can be tuned by temperature (T) when crossing the superconducting transition temperature Tc of YBCO. The tuning property can be quantified by describing the THz transmittance of the patterned YBCO films vs. T through a model of coupled resonators. This model allows us to estimate the THz resonances of split-ring arrays and their interaction, showing how the kinetic inductance Lk in the superconducting state is the main parameter affecting the metamaterial properties.

Keywords

split ring resonator; superconductor; modulation; THz

Subject

MATERIALS SCIENCE, General Materials Science

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