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J. TRAJIC1, N. ROMCEVIC1,* , M. GILIC1, M. PETROVIC DAMJANOVIC1, M. ROMCEVIC1, V. N. NIKIFOROV2
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 (ωP). 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..
Semiconductors, Crystal growth, Phonons, Light absorption and reflection.
J. TRAJIC, N. ROMCEVIC, M. GILIC, M. PETROVIC DAMJANOVIC, M. ROMCEVIC, V. N. NIKIFOROV, Optical properties of PbTe0.95S0.05 single crystal at different temperatures: far – infrared study, Optoelectronics and Advanced Materials - Rapid Communications, 6, 5-6, May-June 2012, pp.543-546 (2012).
Submitted at: March 9, 2012
Accepted at: June 6, 2012
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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