Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd1-xMnxS quantum dots

doi:10.1088/0031-8949/84/06/065704

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	Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd1-xMnxS quantum dots
	Li, Li-Li 1; Wu, Shao-Yi 1,2; Song, Bo-Tao 1; Wang, Xue-Feng 1
通讯作者	Li, Li-Li(llli85@163.com)
	2011-12-01
发表期刊	PHYSICA SCRIPTA
ISSN	0031-8949
卷号	84 期号:6 页码:6
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 Cd1-xMnxS quantum dots are theoretically investigated from the perturbation formulae of these parameters for a 3d(5) ion under trigonally distorted tetrahedra. The impurity Mn2+ is found not to occupy exactly the host Cd2+ 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 : Mn2+, the larger impurity displacement and stronger Mn2+ 3d-3s orbital admixture in the Cd1-xMnxS quantum dots suitably account for the higher zero-field splitting and hyperfine structure constant, respectively. The impurity axial displacement and the Mn2+ 3d-3s orbital admixture in the Cd1-xMnxS quantum dots may exhibit an approximately cubic increase with increasing the Mn concentration x from 0.001 to 0.15.
资助者	Fundamental Research Funds for the Central Universities
DOI	10.1088/0031-8949/84/06/065704
收录类别	SCI
语种	英语
资助项目	Fundamental Research Funds for the Central Universities[ZYGX2010J047]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000298181300031
出版者	IOP PUBLISHING LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/104994
专题	中国科学院金属研究所
通讯作者	Li, Li-Li
作者单位	1.Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Li-Li,Wu, Shao-Yi,Song, Bo-Tao,et al. Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd1-xMnxS quantum dots[J]. PHYSICA SCRIPTA,2011,84(6):6.
APA	Li, Li-Li,Wu, Shao-Yi,Song, Bo-Tao,&Wang, Xue-Feng.(2011).Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd1-xMnxS quantum dots.PHYSICA SCRIPTA,84(6),6.
MLA	Li, Li-Li,et al."Theoretical investigation of the spin Hamiltonian parameters and local structure and their concentration dependences for Cd1-xMnxS quantum dots".PHYSICA SCRIPTA 84.6(2011):6.