Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys-Reference-Cited by-同舟云学术

Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys

Published:2008 Issue:3 Volume:73 Page:369-376
ISSN:0352-5139
Container-title:Journal of the Serbian Chemical Society
language:en
Short-container-title:JSCS

Author:

Trajic Jelena¹^ORCID,Romcevic Nebojsa¹,Romcevic Maja¹,Nikiforov Vladimir²

Affiliation:

1. Institute of Physics, Department for Solid State Physics and New Materials, Belgrade

2. Department of Low-Temperature Physics, Moscow State University, Moscow, Russia

Abstract

In this work far-infrared spectroscopy over a wide temperature range was used to investigate the vibration properties of Pb1-xMnxTe (x ? 0.12) and PbTe1-xSx (x ? 0.05) single crystals. In the analysis of the experimental results, a dielectric function which in advance takes into account the existence of plasmon - two phonon interaction was employed. As a result of the best fit, the three frequencies of the coupled modes were obtained and then the values for the two LO modes and the plasma frequency (?P) were calculated. It was found that the phonons in PbTe1-xSx and Pb1-xMnxTe showed two-mode behavior (each TO-LO mode pair for the end members degenerates to an impurity mode).

Publisher

National Library of Serbia

Subject

General Chemistry

Reference14 articles.

1. Soft-Phonon-Induced Raman Scattering in IV-VI Compounds

2. Submillimetre spectroscopy of Pb1−xGexTe

3. Influence of exchange interaction on bandstructure of Pb1−xMnxTe

4. Optical properties of Pb1-xMnxTe

5. Structural and Galvanomagnetic Properties of Pb1−xMnxTe Single Crystals Grown by the Bridgman-Stockbarger Method

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