Optical absorption in MnIn2S4 single crystals

被引:4
|
作者
Niftiev, N. N. [1 ]
Tagiev, O. B.
机构
[1] Azerbaijan State Pedag Univ, AZ-1000 Baku, Azerbaijan
关键词
PHOTOSENSITIVE STRUCTURES; EDGE; CURRENTS; FEIN2S4;
D O I
10.1134/S0030400X12070144
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Optical absorption in MnIn2S4 single crystals has been studied. Direct and indirect optical transitions are found to occur at photon energies of 1.90-2.16 eV in the temperature range of 80-342 K. The temperature dependence of the band gap is determined; its temperature coefficients E (gd) and E (gi) are found to be -4.84 x 10(-4) and -6.33 x 10(-4) eV/K, respectively. The electron-phonon interaction is the main mechanism of the temperature shift of the intrinsic-absorption edge. MnIn2S4 single crystals exhibit anisotropy in polarized light at the absorption edge in the temperature range of 90-190 K; the nature of this anisotropy is explained.
引用
收藏
页码:71 / 74
页数:4
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