| CO分子与碱金属原子在Fe(110)表面上的相互作用 |
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| 引用本文： | 鲍世宁,朱立,徐亚伯,李佐志. CO分子与碱金属原子在Fe(110)表面上的相互作用[J]. 物理学报, 1991, 40(4): 604-609 |
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| 作者姓名： | 鲍世宁 朱立 徐亚伯 李佐志 |
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| 作者单位： | 浙江大学物理系,杭州,310027 |
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| 摘 要： | 本文介绍了CO分子分别与K原子或Na原子在Fe(110)表面上共吸附的研究。角分辨率紫外光电子能谱(ARUPS)的结果表明,碱金属原子在Fe(110)表面上的存在,紫外光电子能谱中出现了结合能低于通常CO分子1π能级的新峰。该峰位于费密能级以下6.3eV处,是C0在碱金属影响下电子结构改变的结果。该峰的出现对应着CO分子处于C—O键明显减弱的状态。偏振紫外光电子能谱的研究表明:6.3eV处的谱峰联系的电子轨道有一个对称平面和一个反对称平面,分别平行于<001>晶向和<110>晶向。CO分子轨道的对称性不因关键词：
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| 关 键 词： | CO Fe 碱金属 表面 相互作用 |
| 收稿时间： | 1990-03-28 |
INTERACTION BETWEEN ALKALI METAL AND CO ON Fe(110) SURFACE |
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| BAD SHI-NING,ZHU LI,XU YA-BO and LI ZHUO-ZHI. INTERACTION BETWEEN ALKALI METAL AND CO ON Fe(110) SURFACE[J]. Acta Physica Sinica, 1991, 40(4): 604-609 |
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| Authors: | BAD SHI-NING ZHU LI XU YA-BO LI ZHUO-ZHI |
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| Abstract: | The influence of coadsorbed alkali metal on the electronic structure of CO was studied by ARUPS with polarized and unpolarized light. A new peak at 6.3 eV was observed, it reflects a new orbital of CO with the presence of coadsorbed alkali atoms. A symmetry plane and an anti-symmetry plane for this orbital were found, which are paralell to the 〈001〉azimuth and 〈110〉azimuth of the crystal surface respectively. The symmetry results of CO coadsorbed with different kinds of alkali metal are the same. |
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