Transport and optical properties of PbTe 1− x  S x  ( x  = 0.02 and  x  = 0.05) mixed crystals | Zendy

Miljković J. M. | Zendy; Romčević N. | Zendy; Popovic Z. V. | Zendy; Köunig W. | Zendy; Nikiforov V. N. | Zendy

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Transport and optical properties of PbTe 1− x S x ( x = 0.02 and x = 0.05) mixed crystals

Author(s) -

Miljković J. M.,

Romčević N.,

Popovic Z. V.,

Köunig W.,

Nikiforov V. N.

Publication year - 1996

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221930105

Subject(s) - phonon , raman scattering , far infrared , raman spectroscopy , condensed matter physics , infrared , materials science , phase transition , scattering , wavelength , plasmon , phase (matter) , optics , chemistry , physics , optoelectronics , organic chemistry

Far‐infrared and Raman scattering spectra as well as galvanomagnetic measurements of PbTe 1− x S x ( x = 0.02 and 0.05) mixed crystals in the temperature range from 10 to 300 K are presented. The far‐infrared reflectivity spectra are analysed using a fitting procedure based on the plasmon‐phonon interaction model. Galvanomagnetic and far‐infrared measurements indicate the existence of a phase transition at about Tc = 60 K for x = 0.05, whereas for samples with x = 0.02 the phase transition is not observed. Also, it is found that the long‐wavelength optical phonon modes of these mixed crystals show a “two‐mode” behaviour.

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