| Two-Step Oxidation of Pb（111） Surfaces |
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| 引用本文： | 姜鹏,王立莉,宁艳晓,齐云,马旭村,贾金锋,薛其坤. Two-Step Oxidation of Pb（111） Surfaces[J]. 中国物理快报, 2009, 26(1): 238-240 |
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| 作者姓名： | 姜鹏 王立莉 宁艳晓 齐云 马旭村 贾金锋 薛其坤 |
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| 作者单位： | [1]Institute of Physics, Chinese Academy of Sciences, Beijing 100190 [2]Department of Physics, Tsinghua University, Beijing 100084 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 20733008, and the National Basic Research Programme of China. |
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| 摘 要： | We report on a two-step method for oxidation of Pb（111） surfaces, which consists of low temperature （90K） adsorption of 02 and subsequent annealing to room temperature. In situ scanning tunnelling microscopy observation reveals that oxidation of Pb（111） can occur effectively by this method, while direct room temperature adsorption results in no oxidation. Temperature-dependent adsorption behaviour suggests the existence of a precursor state for 02 adsorption on Pb（111） surfaces and can explain the oxidation-resistance of clean Pb（111） surface at room temperature.
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| 关 键 词： | 两步法 氧化铅表面 退火处理 室温 |
| 收稿时间： | 2008-08-25 |
Two-Step Oxidation of Pb(111) Surfaces |
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| JIANG Peng,WANG Li-Li,NING Yan-Xiao,QI Yun,MA Xu-Cun,JIA Jin-Feng,XUE Qi-Kun. Two-Step Oxidation of Pb(111) Surfaces[J]. Chinese Physics Letters, 2009, 26(1): 238-240 |
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| Authors: | JIANG Peng WANG Li-Li NING Yan-Xiao QI Yun MA Xu-Cun JIA Jin-Feng XUE Qi-Kun |
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| Affiliation: | Institute of Physics, Chinese Academy of Sciences, Beijing 100190Department of Physics, Tsinghua University, Beijing 100084 |
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| Abstract: | We report on a two-step method for oxidation of Pb(111) surfaces, which consists of low temperature (90K) adsorption of O2 and subsequent annealing to room temperature. In situ scanning tunnelling microscopy observation reveals that oxidation of Pb(111) can occur effectively by this method, while direct room temperature adsorption results in no oxidation. Temperature-dependent adsorption behaviour suggests the existence of a precursor state for O2 adsorption on Pb(111) surfaces and can explain the oxidation-resistance of clean Pb(111) surface at room temperature. |
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| Keywords: | 68.37.Ef 68.43.Mn 68.47.De |
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