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The application of metamaterials and plasmonic structures in the visible and near infrared are strongly limited by the dissipative losses due to the low conductivity of the most used metals in this frequency range. High temperature superconductors are plasmonic materials at nonzero temperature that can provide a possible alternative approach to overcome this limit. Moreover, they can have zero or even negative dielectric constant, and a bipolar behavior. All these characteristics are attractive for plasmonic applications, and encourage further studies aimed at a more detailed knowledge of the parameters characterizing high temperature superconductors as possible optical materials. In this paper, Fourier Transform Infrared Spectroscopy analysis and ellipsometric measurements in the visible and infrared spectral regions on NdBa2Cu3O7−δ (Nd123) and ruthenocuprate superconductor GdSr2RuCu2O8−δ (Gd1212 …
American Institute of Physics
Publication date: 
28 Aug 2013

M Gombos, S Romano, I Rendina, G Carapella, R Ciancio, V Mocella

Biblio References: 
Volume: 114 Issue: 8 Pages: 083521
Journal of Applied Physics