This article is cited in 2 papers

Optical properties

Transmission spectra of epitaxial layers of Pb$_{1-x}$Eu$_x$Te (0 $\le x\le$ 0.37) solid solutions in the frequency range 7–4000 cm$^{-1}$

E. S. Zhukova^a, N. P. Aksenov^a, B. P. Gorshunov^a, Yu. G. Selivanov^b, I. I. Zasavitskii^b, D. Wu^c, M. Dressel<sup>c

a</sup> Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
^c Physikalisches Institut, Universitat Stuttgart, Stuttgart, Germany

Abstract: The spectra of epitaxial Pb$_{1-x}$Eu$_x$Te (0 $\le x\le$ 0.37) solid solution layers grown on BaF$_2$ and Si substrates have been investigated over a wide frequency range 7–4000 cm$^{-1}$ at temperatures of 5–300 K. Apart from the phonon and impurity absorption lines, the absorption in a local mode in PbEuTe layers of substrates and buffer layers has been observed in the frequency range 110–114 cm$^{-1}$. As the temperature decreases from 300 to 5 K, the transverse phonon mode softens from 33.0 to 19.5 cm$^{-1}$.

Received: 15.07.2010
Accepted: 30.09.2010

 English version: Physics of the Solid State, 2011, 53:4, 810–814

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