Investigations on the local structure and the EPR parameters for Cu2+-doped GaN

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	Investigations on the local structure and the EPR parameters for Cu2+-doped GaN
	Wei, Li-Hua 1; Wu, Shao-Yi 1,2; Zhang, Zhi-Hong 1; Wang, Hui 1; Wang, Xue-Feng 1
刊名	MODERN PHYSICS LETTERS B
	2008-07-20
卷号	22 期号:18 页码:1739-1747
关键词	electron paramagnetic resonance defect structures crystal-fields and spin Hamiltonians Cu2+ GaN
ISSN号	0217-9849
通讯作者	Wu, Shao-Yi(shaoyiwu@163.com)
英文摘要	The local structure and the EPR parameters (g factors and the hyperfine structure constants) for Cu2+ in GaN are theoretically studied from the perturbation formulas of these parameters for a 3d(9) ion in trigonally distorted tetrahedra. In these formulas, the ligand orbital and spin-orbit coupling contributions are taken into account from the cluster approach, in view of the strong covalency effect of the system. Based on the studies, the impurity Cu2+ is found not to occupy exactly the host Ga3+ site but to suffer a slight displacement (approximate to 0.004 angstrom) towards the ligand triangle along C-3 axis due to charge and size mismatching substitution. The theoretical EPR parameters show good agreement with the experimental data. The validity of the impurity displacement is also discussed.
WOS研究方向	Physics
语种	英语
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
WOS记录号	WOS:000258297400005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/95415]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wu, Shao-Yi
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	Wei, Li-Hua,Wu, Shao-Yi,Zhang, Zhi-Hong,et al. Investigations on the local structure and the EPR parameters for Cu2+-doped GaN[J]. MODERN PHYSICS LETTERS B,2008,22(18):1739-1747.
APA	Wei, Li-Hua,Wu, Shao-Yi,Zhang, Zhi-Hong,Wang, Hui,&Wang, Xue-Feng.(2008).Investigations on the local structure and the EPR parameters for Cu2+-doped GaN.MODERN PHYSICS LETTERS B,22(18),1739-1747.
MLA	Wei, Li-Hua,et al."Investigations on the local structure and the EPR parameters for Cu2+-doped GaN".MODERN PHYSICS LETTERS B 22.18(2008):1739-1747.