Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd(1-x)Mn(x)S quantum dots
文献类型：期刊论文
| 作者 | L. L. Li ; S. Y. Wu ; B. T. Song ; X. F. Wang |
| 刊名 | Physica Scripta
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:6 |
| 关键词 | electron-paramagnetic-resonance transition-metal impurities atomic screening constants optical-properties defect structures scf functions crystals ions nanocrystals semiconductor |
| ISSN号 | 0031-8949 |
| 中文摘要 | The spin Hamiltonian parameters (zero-field splitting D, g factors and hyperfine structure constants) and local structure as well as their concentration dependences for Cd(1-x)Mn(x)S quantum dots are theoretically investigated from the perturbation formulae of these parameters for a 3d(5) ion under trigonally distorted tetrahedra. The impurity Mn(2+) is found not to occupy exactly the host Cd(2+) site in the CdS quantum dots but to experience an inward displacement 0.041 angstrom towards the ligand triangle along the C(3)-axis because of the size mismatching substitution and the internal stress. As compared with bulk CdS : Mn(2+), the larger impurity displacement and stronger Mn(2+) 3d-3s orbital admixture in the Cd(1-x)Mn(x)S quantum dots suitably account for the higher zero-field splitting and hyperfine structure constant, respectively. The impurity axial displacement and the Mn(2+) 3d-3s orbital admixture in the Cd(1-x)Mn(x)S quantum dots may exhibit an approximately cubic increase with increasing the Mn concentration x from 0.001 to 0.15. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30472]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. L. Li,S. Y. Wu,B. T. Song,et al. Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd(1-x)Mn(x)S quantum dots[J]. Physica Scripta,2011,84(6). |
| APA | L. L. Li,S. Y. Wu,B. T. Song,&X. F. Wang.(2011).Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd(1-x)Mn(x)S quantum dots.Physica Scripta,84(6). |
| MLA | L. L. Li,et al."Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd(1-x)Mn(x)S quantum dots".Physica Scripta 84.6(2011). |
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来源：金属研究所
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