| ZnS:Cr2+中局域晶格结构和自旋单态对零场分裂参量的贡献 |
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| 引用本文： | 卢成,王丽,卢志文,宋海珍,李根全.ZnS:Cr2+中局域晶格结构和自旋单态对零场分裂参量的贡献[J].物理学报,2011,60(8):87601-087601. |
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| 作者姓名： | 卢成 王丽 卢志文 宋海珍 李根全 |
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| 作者单位： | 南阳师范学院物理与电子工程学院,南阳 473061 |
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| 基金项目： | 河南省自然科学基金(批准号:102300410209)和南阳师范学院科研基金(批准号:NYTC2006K102,ZX2010011)资助的课题. |
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| 摘 要： | 在统一配体场耦合图像的基础上,构造了d4电子组态过渡金属离子在强场图像下包括所有自旋状态的210×210维完全能量矩阵.通过对角化完全能量矩阵,研究了Cr2+掺杂ZnS的局域晶格结构和Jahn-Teller能.理论计算结果与实验值符合非常好.同时,还研究了Cr2+掺杂ZnS后体系自旋单态对零场分裂参量的贡献.结果表明:自旋单态对二阶零场分裂参量D的贡献可以忽略,但是对于四阶零场分裂参量a和F的贡献却
关键词：
2+')" href="#">ZnS:Cr2+
统一配体场耦合
自旋单态
Jahn-Teller能
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| 关 键 词： | ZnS:Cr2+ 统一配体场耦合 自旋单态 Jahn-Teller能 |
| 收稿时间： | 2010-10-30 |
Local lattice structure and spin singlet contribution to zero-field splitting of ZnS:Cr2+ |
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| Lu Cheng,Wang Li,Lu Zhi-Wen,Song Hai-Zhen and Li Gen-Quan.Local lattice structure and spin singlet contribution to zero-field splitting of ZnS:Cr2+[J].Acta Physica Sinica,2011,60(8):87601-087601. |
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| Authors: | Lu Cheng Wang Li Lu Zhi-Wen Song Hai-Zhen and Li Gen-Quan |
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| Institution: | College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China;College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China |
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| Abstract: | Using the unified ligand-field-coupling scheme, the 210×210 complete energy matrices including all the spin states for d4 configuration transition metal ions are constructed within a strong field representation. By diagonalizing the complete energy matrices, the local lattice structure and the Jahn-Teller energy of Cr2+ ions doped into ZnS are investigated. It is found that the theoretical results are in good agreement with the experimental data. Moreover, the contribution of the spin singlet to the zero-field splitting (ZFS) parameter of Cr2+ ions doped into ZnS is also investigated. The results indicate that the spin singlet contribution to ZFS parameter D is negligible, but the contribution to ZFS parameters a and F may not be neglected. |
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| Keywords: | ZnS:Cr2+ unified ligand-field-coupling spin singlets Jahn-Teller energy |
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