http://www.cnr.it/ontology/cnr/individuo/prodotto/ID261790

Superconductors in plasmonics and metamaterials : some experimental data (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Superconductors in plasmonics and metamaterials : some experimental data (Articolo in rivista) (literal)

Anno

2013-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1117/12.2018332 (literal)

Alternative label

M.Gombos, S.Romano, I.Rendina, R.Ciancio, G.Carapella, and V.Mocella (2013)
Superconductors in plasmonics and metamaterials : some experimental data
in Proceedings of SPIE, the International Society for Optical Engineering; SPIE, Society of Photo-Optical Instrumentation Engineers, Bellingham [WA] (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

M.Gombos, S.Romano, I.Rendina, R.Ciancio, G.Carapella, and V.Mocella (literal)

Pagina inizio

87711B-1 (literal)

Pagina fine

87711B-9 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

8771 (literal)

Rivista

Proceedings of SPIE, the International Society for Optical Engineering (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

9 (literal)

Note

ISI Web of Science (WOS) (literal)
Scopu (literal)
Google Scholar (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

CNR-IMM UOS Napoli, Napoli, Italia CNR-SPIN UOS Salerno & Dip. di Fisica \"E.R.Caianiello\", Università di Salerno, Baronissi (SA) ITALIA (UE) CNR-IOM TASC Trieste, Basovizza (TS) ITALIA (UE) (literal)

Titolo

Superconductors in plasmonics and metamaterials : some experimental data (literal)

Abstract

High frequencies (visible and near infrared) applications of metamaterials and plasmonic structures are strongly limited by dissipative losses in structures, due to poor conductivity of most used metals in this frequency range. The use of high temperature superconductors (HTSC) is a possible approach to this problem, being HTSC plasmonic materials at nonzero temperature. Negative dielectic constant and variety of charge carriers (electrons or holes) are further very attractive features for plasmonic applications. Characterization of the high frequency response of these materials is then necessary in order to correctly understand the optical parameters of HTSC. We report on FTIR and ellipsometry measurements on NdBa2Cu3O7-? (Nd123) and the ruthenocuprate superconductor GdSr2RuCu2O8-? (Gd1212) in optical and near infrared regime. Among YBCO-like cuprate superconductors, Nd123 presents the highest Tc (96K), and the most interesting magnetic response properties. Even more interesting, in view of use for metamaterial, is Gd1212, whose main characteristic is the coexistence, in the same cell, of superconductivity and magnetic order below Tc: Ru ions intrinsic magnetic moments order themselves below 135K, whereas superconductivity onset is at about 40K, depending on fabrication details. We performed measurements on Melt-Textured bulk samples, which present the best superconducting properties. Results confirm the promising feature of the considered materials; further analyses, also on powders and films, are in progress. (literal)

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