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2002 | 102 | 6 | 801-810
Article title

Temperature Dependence of the First-Order Raman Phonon Lines in GaS_{0.25}Se_{0.75} Layered Crystals

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Languages of publication
EN
Abstracts
EN
Systematic measurements by Raman scattering of the frequency and line width of the zone-center optical modes in GaS_{0.25}Se_{0.75} layered crystal over the temperature range of 10-300 K are carried out. The analysis of temperature dependence of intralayer modes shows that frequency shift and line broadening are successfully modeled by including the contributions from thermal expansion and lattice anharmonicity. The purely anharmonic contribution (phonon-phonon coupling) is found to be due to three-phonon processes.
Keywords
EN
Year
Volume
102
Issue
6
Pages
801-810
Physical description
Dates
published
2002-12
received
2002-07-04
(unknown)
2002-09-24
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv102n607kz
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