| Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN | |
| L. H. Wei; S. Y. Wu; Z. H. Zhang; H. Wang; X. F. Wang | |
| 2008 | |
| Source Publication | Modern Physics Letters B
 |
| ISSN | 0217-9849 |
| Volume | 22Issue:18Pages:1739-1747 |
| Abstract | The local structure and the EPR parameters (g factors and the hyperfine structure constants) for Cu(2+) 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 Cu(2+) 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. |
| description.department | [wei, li-hua; wu, shao-yi; zhang, zhi-hong; wang, hui; wang, xue-feng] univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. [wu, shao-yi] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;shaoyiwu@163.com |
| Keyword | Electron Paramagnetic Resonance Defect Structures Crystal-fields And Spin Hamiltonians Cu(2+) Gan Electron-paramagnetic-resonance Atomic Screening Constants Defect Structures Scf Functions Doped Gan Transition Crystals Ions Impurities Fe3++ |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/33183 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | L. H. Wei,S. Y. Wu,Z. H. Zhang,et al. Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN[J]. Modern Physics Letters B,2008,22(18):1739-1747. |
| APA | L. H. Wei,S. Y. Wu,Z. H. Zhang,H. Wang,&X. F. Wang.(2008).Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN.Modern Physics Letters B,22(18),1739-1747. |
| MLA | L. H. Wei,et al."Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN".Modern Physics Letters B 22.18(2008):1739-1747. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment