Superconductivity-Induced Transparency in Terahertz Metamaterials

Odeta Limaj, Flavio Giorgianni, Alessandra Di Gaspare, Valeria Giliberti, Gianluca De Marzi, Pascale Roy, Michele Ortolani, Xiaoxing Xi, Daniel Cunnane, Stefano Lupi

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A plasmonic analogue of electromagnetically induced transparency is activated and tuned in the terahertz (THz) range in asymmetric metamaterials fabricated from high critical temperature (Tc) superconductor thin films. The asymmetric design provides a near-field coupling between a superradiant and a subradiant plasmonic mode, which has been widely tuned through superconductivity and monitored by Fourier transform infrared spectroscopy. The sharp transparency window that appears in the extinction spectrum exhibits a relative modulation up to 50% activated by temperature change. The interplay between ohmic and radiative damping, which can be independently tuned and controlled, allows for engineering the electromagnetically induced transparency of the metamaterial far beyond the current state-of-the-art, which relies on standard metals or low-Tc superconductors. (Graph Presented).
Original languageEnglish
Pages (from-to)570 - 575
Number of pages6
JournalACS Photonics
Volume1
Issue number7
DOIs
Publication statusPublished - 16 Jul 2014
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Limaj, O., Giorgianni, F., Di Gaspare, A., Giliberti, V., De Marzi, G., Roy, P., ... Lupi, S. (2014). Superconductivity-Induced Transparency in Terahertz Metamaterials. ACS Photonics, 1(7), 570 - 575. https://doi.org/10.1021/ph500104k