RAMAN-SCATTERING SPECTRA OF INDIUM-DOPED PBTE

被引：13
|
作者：
ROMCEVIC, N [1 ]
POPOVIC, ZV [1 ]
KHOKHLOV, DR [1 ]
机构：
[1] MOSCOW MV LOMONOSOV STATE UNIV, DEPT LOW TEMP PHYS, MOSCOW 117234, RUSSIA
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1995年 / 7卷 / 26期
关键词：
D O I：
10.1088/0953-8984/7/26/016
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The non-polarized Raman scattering spectra of indium-doped PbTe single crystals were measured in the temperature range between 10 and 300 K. Well resolved peaks at about 68, 126 and 143 cm(-1) were observed for all temperatures. An additional mode appears at about 115 cm(-1) for temperatures below 100 K. The intensity of this mode increases sharply when the temperature is lowered below 25 K, the temperature where a persistent photoconductivity effect in PbTe(In) appears. This mode is assigned as a local In impurity mode and represents a population of metastable states due to the transfer of electrons from two-electron to one-electron metastable impurity states.
引用
收藏
页码：5105 / 5109
页数：5
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