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.

Terahertz resonators based on YBa2Cu3O7 high-Tc superconductor / Macis, Salvatore; Paolozzi, MARIA CHIARA; D'Arco, Annalisa; Tomarchio, Luca; Di Di Gaspare, Alessandra; Lupi, Stefano. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 12:20(2022), p. 10242. [10.3390/app122010242]

Terahertz resonators based on YBa2Cu3O7 high-Tc superconductor

Salvatore Macis;Maria Chiara Paolozzi;Annalisa D’Arco;Luca Tomarchio;Stefano Lupi
2022

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.
2022
split-ring resonator; superconductor; modulation; THz
01 Pubblicazione su rivista::01a Articolo in rivista
Terahertz resonators based on YBa2Cu3O7 high-Tc superconductor / Macis, Salvatore; Paolozzi, MARIA CHIARA; D'Arco, Annalisa; Tomarchio, Luca; Di Di Gaspare, Alessandra; Lupi, Stefano. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 12:20(2022), p. 10242. [10.3390/app122010242]
File allegati a questo prodotto
File Dimensione Formato  
Macis_Terahertz resonators_2022.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 6.28 MB
Formato Adobe PDF
6.28 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1657256
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 6
  • ???jsp.display-item.citation.isi??? 6
social impact