Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys

Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys

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 existenc...

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Main Authors: Trajić Jelena, Romčević Nebojša, Romčević Maja, Nikiforov Vladimir N.
Format: Article
Language:English
Published: Serbian Chemical Society 2008-01-01
Series:Journal of the Serbian Chemical Society
Subjects:
semimagnetic semiconductors
far-infrared spectroscopy
vibration properties
phonon behavior
Online Access:http://www.doiserbia.nb.rs/img/doi/0352-5139/2008/0352-51390803369T.pdf
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spelling doaj-a9cce6eed1f84e7c992e55b704172dea2020-12-30T07:54:41ZengSerbian Chemical Society Journal of the Serbian Chemical Society0352-51391820-74212008-01-0173336937610.2298/JSC0803369T0352-51390803369TPlasmon: Two phonon interaction in PbMnTe and PbTeS alloysTrajić Jelena0Romčević Nebojša1Romčević Maja2Nikiforov Vladimir N.3Institute of Physics, Department for Solid State Physics and New Materials, BelgradeInstitute of Physics, Department for Solid State Physics and New Materials, BelgradeInstitute of Physics, Department for Solid State Physics and New Materials, BelgradeDepartment of Low-Temperature Physics, Moscow State University, Moscow, RussiaIn 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 (ωP) 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).http://www.doiserbia.nb.rs/img/doi/0352-5139/2008/0352-51390803369T.pdfsemimagnetic semiconductorsfar-infrared spectroscopyvibration propertiesphonon behavior
collection DOAJ
language English
format Article
sources DOAJ
author Trajić Jelena
Romčević Nebojša
Romčević Maja
Nikiforov Vladimir N.
spellingShingle Trajić Jelena
Romčević Nebojša
Romčević Maja
Nikiforov Vladimir N.
Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys
Journal of the Serbian Chemical Society
semimagnetic semiconductors
far-infrared spectroscopy
vibration properties
phonon behavior
author_facet Trajić Jelena
Romčević Nebojša
Romčević Maja
Nikiforov Vladimir N.
author_sort Trajić Jelena
title Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys
title_short Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys
title_full Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys
title_fullStr Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys
title_full_unstemmed Plasmon: Two phonon interaction in PbMnTe and PbTeS alloys
title_sort plasmon: two phonon interaction in pbmnte and pbtes alloys
publisher Serbian Chemical Society
series Journal of the Serbian Chemical Society
issn 0352-5139
1820-7421
publishDate 2008-01-01
description 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 (ωP) 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).
topic semimagnetic semiconductors
far-infrared spectroscopy
vibration properties
phonon behavior
url http://www.doiserbia.nb.rs/img/doi/0352-5139/2008/0352-51390803369T.pdf
work_keys_str_mv AT trajicjelena plasmontwophononinteractioninpbmnteandpbtesalloys
AT romcevicnebojsa plasmontwophononinteractioninpbmnteandpbtesalloys
AT romcevicmaja plasmontwophononinteractioninpbmnteandpbtesalloys
AT nikiforovvladimirn plasmontwophononinteractioninpbmnteandpbtesalloys
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