稀磁半导体Zn_(1-x)Co_xS光谱的理论解释

Spectra Analysis on Diluted Magnetic Semiconductor Zn_(1-x) Co_xS

以Co2 + 自由离子的 3d电子径向波函数为基础 ,对Zn1-xCoxS中的电子云延伸效应进行了理论研究 .引入了电子云延伸效应系数κ ,得到了Zn1-xCoxS中Co2 + 离子的最优化 3d电子径向波函数 ,并由此得到了Zn1-xCoxS的光谱 .结果表明 :应用晶体场理论 ,考虑到电子云延伸效应的修正 ,对于研究稀磁半导体的光谱性质是方便有效的 .同时也从物理学本质上解释了电子云延伸效应 .

Based on the 3d electron's radial wave function of Co 2+ free ion, this paper investigates the Nephelauxetic effects in Zn 1-x Co xS crystal theoretically, introduces a Nephelauxetic effect factor κ,and then gains the 3d electron's optimal radial wave function of Co 2+ ion in the Zn 1-x Co xS crystal. With the optimal radial wave function, the spectra of crystal had been calculated, the results show that: by using the crystal field theory and considering the modification of the Nephelauxetic Effects, it is not only easy but also efficient to study the spectra properties of the diluted magnetic semiconductors. Furthermore, we provide reasonable explanations for the Nephelauxetic effects from the basis of physics.