| Issue |
Europhys. Lett.
Volume 58, Number 3, May 2002
|
|
|---|---|---|
| Page(s) | 415 - 421 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00655-3 | |
| Published online | 01 August 2002 | |
Optical properties of crystals with spatial dispersion— Josephson plasma resonance in layered superconductors
1
Los Alamos National Laboratory - Los Alamos, NM 87545, USA
2
ETH Hönggerberg, Institut für Theoretische
Physik - 8093 Zürich, Switzerland
Received:
10
December
2001
Accepted:
4
February
2002
We derive the transmission coefficient, 
, for grazing
incidence of crystals with spatial dispersion accounting for the
excitation of multiple modes with different wave vectors 
for a given frequency ω. The generalization of the Fresnel
formulas contains the refraction indices of these modes as
determined by the dielectric function 
.
Near frequencies 
, where the group velocity
vanishes, depends also on an additional parameter
determined by the crystal microstructure. The transmission T is
significantly suppressed, if one of the excited modes is decaying
into the crystal. We derive these features microscopically for the
Josephson plasma resonance in layered superconductors.
PACS: 74.25.Gz – Optical properties / 42.25.Gy – Edge and boundary effects; reflection and refraction / 74.72.-h – High-
compounds
© EDP Sciences, 2002
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