Počet záznamů: 1

Far-infrared transmission of a superconducting NbN film

  1. 1.
    0353313 - FZU-D 2011 RIV US eng J - Článek v odborném periodiku
    Šindler, M. - Tesař, Roman - Koláček, Jan - Skrbek, L. - Šimša, Zdeněk
    Far-infrared transmission of a superconducting NbN film.
    Physical Review. B. Roč. 81, č. 18 (2010), 184529/1-184529/5 ISSN 1098-0121
    Grant CEP: GA ČR GA202/08/0326
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: superconductivity * BCS theory * terahertz radiation
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.772, rok: 2010

    We report far-infrared optical properties of a thin NbN supercondu ctor in magnetic field, B, up to 10 T. Transmission, Tr(T,B), of monochromatic linearly polarized laser beam with frequency below and above an optical gap is measured both below and above Tc. Tr(T,B=0) is well described by the BCS-based model that approximates the sample as a mixture of superconductors with different Tc. Tr(T,B not equal to 0) appears qualitatively different for Voigt and Faraday geometry. To calculate optical properties, we use Bruggeman’s approach and present a phenomenological model accounting for both field orientations. The model captures all observed features of the Tr(T,B) data.
    Trvalý link: http://hdl.handle.net/11104/0192592