Optical properties of PbTe0.95S0.05 single crystal at different temperatures: far-infrared study

被引：0

作者：

Trajic, J. ^{[1
]}

Romcevic, N. ^{[1
]}

Gilic, M. ^{[1
]}

Damjanovic, M. Petrovic ^{[1
]}

Romcevic, M. ^{[1
]}

Nikiforov, V. N. ^{[2
]}

机构：

[1] Univ Belgrade, Inst Phys, Belgrade 11080, Serbia

[2] Moscow MV Lomonosov State Univ, Moscow 119899, Russia

来源：

OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS | 2012年 / 6卷 / 5-6期

关键词：

Semiconductors; Crystal growth; Phonons; Light absorption and reflection; MODES;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Far - infrared spectroscopy over a wide temperature range was used to investigate vibration properties of PbTe0.95S0.05 single crystal. The analysis of the far infrared spectra was made by fitting procedure based on the model of coupled oscillators. Namely, we used dielectric function that in advance takes into account the existence of plasmon two phonon interaction. As a result of the best fit we obtained three frequencies of coupled modes and than we calculated values for two LO modes and plasma frequencies (omega p). We obtained a very good agreement between the result obtained as a best fit from experimental spectra and theoretical prediction. We have found that phonons in PbTe0.95S0.05 show the two mode behavior.

引用

页码：543 / 546

页数：4

共 13 条

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