Polariton reflectance spectra from thin ZnSxSe1−x
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Authors: | G V Astakhov V P Kochereshko A V Platonov D R Yakovlev W Ossau W Faschinger G Landwehr |
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Institution: | 2. A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia 1. Physikalisches Institut der Universit?t Würzburg, 97074, Würzburg, Germany
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Abstract: | A study of reflectance spectra from thin ZnSxSe1−x
solid-solution layers in the region of excitonic resonances is reported. It has been found that an increase in sulfur concentration
in the layers increases the inhomogeneous broadening of the quantized polariton lines. It has been established that the inhomogeneous
line broadening in a reflectance spectrum depends on the magnitude of exciton-photon mixing; it is small in the long-wavelength
region where the photon component of the polariton is large, and large at short wavelengths where the mechanical component
dominates.
Fiz. Tverd. Tela (St. Petersburg) 40, 867–868 (May 1998) |
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