| YBa2Cu3O7超导体中空穴状态的X射线光电子能谱研究 |
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| 引用本文： | 王楠林,谭明秋,赵展春,王劲松,沙健,刘先明,季明荣,张其瑞.YBa2Cu3O7超导体中空穴状态的X射线光电子能谱研究[J].物理学报,1991,40(5):821-825. |
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| 作者姓名： | 王楠林 谭明秋 赵展春 王劲松 沙健 刘先明 季明荣 张其瑞 |
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| 作者单位： | (1)浙江大学物理系,杭州,310027; (2)中国科学技术大学结构分析开放研究实验室,合肥,230026; (3)中国科学技术大学物理系,合肥,230026 |
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| 基金项目： | 国家自然科学基金与国家超导技术联合研究开发中心资助的课题 |
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| 摘 要： | 对正交单相YBa2Cu3O7样品进行了X射线光电子能谱(XPS)测量。明显观察到Cu的类高价状态。讨论了Cu2p和O1s的XPS中各峰对应的电子状态,认为由于过量的O而引入的额外空穴产生在O2p轨道上。Cu的类高价状态包含Cu3d9L和Cu3d10L2两种状态的组合。
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| 关 键 词： | YBaCuO X射线 空穴 光电子能谱 |
| 收稿时间： | 8/9/1990 12:00:00 AM |
X-RAY PHOTOELECTRON SPECTROSCOPY STUDY ON THE HOLE STATES IN YBa2Cu3O7 SUPERCONDUCTOR |
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| Wang Nan-lin,Tan Ming-qiu,Zhao Zhan-chun,Wang Jing-song,Sha Jian,Liu Xian-ming,Ji Ming-rong and Zhang Qi-rui.X-RAY PHOTOELECTRON SPECTROSCOPY STUDY ON THE HOLE STATES IN YBa2Cu3O7 SUPERCONDUCTOR[J].Acta Physica Sinica,1991,40(5):821-825. |
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| Authors: | Wang Nan-lin Tan Ming-qiu Zhao Zhan-chun Wang Jing-song Sha Jian Liu Xian-ming Ji Ming-rong and Zhang Qi-rui |
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| Abstract: | XPS measurements have been performed on the orthogonal single phase YBa2Cu3O7 superconductor. The higher valence-like state of Cu is observed clearly. The electronic states corresponding to the peaks in Cu2p and O1s XPS are discussed. It is suggested that the extra holes due to the excess oxygen are created on the O2p orbit. The higher valence-like state of Cu corresponds to the combination of Cu3d9L and Cu3d10L3 states. |
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