| YBa_2Cu_3O_7基面电子态特性计算 |
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| 引用本文： | 宋友林,贾瑜,赵先林,姚乾凯.YBa_2Cu_3O_7基面电子态特性计算[J].低温与超导,2003,31(2):29-32. |
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| 作者姓名： | 宋友林 贾瑜 赵先林 姚乾凯 |
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| 作者单位： | 1. 河南教育学院物理系,郑州,450053
2. 郑州大学物理工程学院,450052 |
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| 基金项目： | 河南省自然科学基金，0111050400， |
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| 摘 要： | 用散射理论描述了 YBa2 Cu3O7( 0 0 1)面的电子能带结构。用近似到第三近邻的紧束缚模型得到了 YBCO的体电子态密度 ,Cu O及 Cu O2 的表面态密度和表面投影能带 ,进而分析了 Cu O和 Cu O2 的表面态密度的特点及与体态密度的差别。
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| 关 键 词： | 表面 高Tc超导体 态密度 |
| 修稿时间： | 2003年1月21日 |
The Electronic Properties of Bulk Terminal YBa2Cu3O7(001) Surface |
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| Song Youlin,Jia Yu,Zhao Xianlin,Yao Qiankai.The Electronic Properties of Bulk Terminal YBa2Cu3O7(001) Surface[J].Cryogenics and Superconductivity,2003,31(2):29-32. |
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| Authors: | Song Youlin Jia Yu Zhao Xianlin Yao Qiankai |
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| Institution: | Song Youlin1,Jia Yu2,Zhao Xianlin1,Yao Qiankai2 |
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| Abstract: | This paper presents a theoretical investigation on the electronic structure of YBa 2Cu 3O 7 surface. The bulk electronic structure of YBa 2Cu 3O 7 was described by the third-neighbor tight-binding formalism and an analytic scattering theoretical method was used to evaluate the surface electronic structure. The bulk and surface density of states and the surface projected band structure of CuO and CuO 2 terminated surface are calculated. The surface density of states of CuO and CuO 2 are compared with the density of states of bulk. |
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| Keywords: | Surface High Tc superconductors Density of states |
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