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J. TRAJIĆ1,* , N. ROMČEVIĆ1, M. ROMČEVIĆ1, Z. LAZAREVIĆ1, T. A. KUZNETSOVA2, D. R. KHOKHLOV2
Vibrational properties of PbTe single crystals doped with Ni are determined using far – infrared spectroscopy in wide temperature range. Far – infrared reflection spectra were analyzed using a fitting procedure based on the modified plasmon – ionised impurity – phonon interaction model. Together with the strong coupling we obtained three local modes of Ni at about 130, 165 and 190 cm–1, which correspond to the impurity atoms in different valence states. The positions of these modes depend on the impurity center charge, while their intensities depend on the temperature and Ni concentration..
Semiconductors, Crystal growth, Phonons, Plasmon – phonon interaction.
J. TRAJIĆ, N. ROMČEVIĆ, M. ROMČEVIĆ, Z. LAZAREVIĆ, T. A. KUZNETSOVA, D. R. KHOKHLOV, Plasmon – ionized impurity – phonon interaction in PbTe doped with Ni, Optoelectronics and Advanced Materials - Rapid Communications, 7, 7-8, July-August 2013, pp.536-540 (2013).
Submitted at: March 22, 2013
Accepted at: July 11, 2013
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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