Volume 35, Number 6, August III 1996
|Page(s)||445 - 450|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Anti-symmetric plasma mode in superconducting films
Instituto de Física, Universidade Federal Fluminense, C.P. 100.093, Niterói 24001-970 RJ,
2 Centre de Recherches sur les Très Basses Températures, Laboratoire Associé à l'Université Joseph Fourier, CNRS - BP 166, 38042 Grenoble-Cédex 9, France
Accepted: 4 July 1996
We consider the propagation of plasma modes in superconducting films bound by a high–dielectric-constant medium and predict a mode that corresponds to the anti-symmetric coupling of the two surface plasmons. We show that anisotropy plays a determinant role in lowering this mode's frequency range, bringing it to the realm of possible experimental observation for the high-Tc superconductors. Theoretical predictions for the maximal and minimum film thickness, where this mode can be found below the plasma frequency along the c-axis, are also made here.
PACS: 74.20.De – Phenomenological theories (two-fluid, Ginzburg-Landau, etc.) / 74.25.Gz – Optical properties / 74.76.-w – Superconducting films
© EDP Sciences, 1996
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