Optical properties of PbTe:Mn

被引：15
作者：
Trajic, J
Romcevic, M
Romcevic, N
Nikolic, S
Golubovic, A
Duric, S
Nikiforov, VN
机构：
[1] Inst Phys, YU-11080 Belgrade, Serbia Monteneg, Serbia
[2] Fac Mining & Geol, YU-11000 Belgrade, Serbia Monteneg, Serbia
[3] Moscow MV Lomonosov State Univ, Low Temp Phys Dept, Moscow 119899, Russia
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 365卷 / 1-2期
关键词：
seimiconductors; crystal growth; light absorption and reflection;
D O I：
10.1016/S0925-8388(03)00676-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, we investigate Mn concentration and crystal growth rate influence on optical properties of PbTe:Mn single crystals. We measured far-infrared reflectivity spectra at room temperature in the 10-250 cm(-1) spectral range. The analysis of the far-infrared spectra was made by a fitting procedure based on the model of coupled oscillators. In spite of the strong plasmon-LO phonon interaction, we found that the plasma frequency decreases as Mn concentration increases, while the crystal growth rate has the opposite effect. Also, we obtained the Mn impurity in-band mode at about 50 cm(-1). (C) 2003 Elsevier B.V. All rights reserved.
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页码：89 / 93
页数：5
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