Infrared absorption spectroscopy of a carbon–oxygen complex in gallium arsenide
Infrared absorption spectroscopy of a carbon–oxygen complex in gallium arsenide
复制标题
砷化镓中碳氧配合物的红外吸收光谱
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
H. Wagner
中科院分区：
文献类型：
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作者：
H. Alt;A. Kersch;H. Wagner
对砷化镓中的碳氧络合物进行了红外吸收测量。在单轴应力作用下，用偏振光研究了2059.6 cm−1的低温伸缩模式。由于取向简并度的提升而产生的分裂行为表明，中心具有四方对称性。天然丰富的~(18)O同位素引起的同位素位移卫星带的强度与简单CO分子的鉴定结果不符。氧原子个数为3 ± 1，缺陷归属与已有的实验数据一致。
Infrared absorption measurements have been carried out on a carbon–oxygen complex in gallium arsenide. The stretching mode at 2059.6 cm−1 has been investigated at low temperatures with polarized light under uniaxial stress in the 〈100〉, 〈111〉, and 〈110〉 crystallographic directions. The splitting behavior due to lifting of orientational degeneracy shows that the center has tetragonal symmetry. The intensity of the isotope shifted satellite band caused by the naturally abundant 18O isotope is not in agreement with the identification as a simple CO‐molecule. The number of incorporated oxygen atoms is 3 ± 1. The assignment of the defect to a CO2 molecule is in agreement with the experimental data available so far.