| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Two-Step Oxidation of Pb(111) Surfaces |
| JIANG Peng1, WANG Li-Li1, NING Yan-Xiao1, QI Yun1, MA Xu-Cun1, JIA Jin-Feng2, XUE Qi-Kun 1,2 |
| 1Institute of Physics, Chinese Academy of Sciences, Beijing 1001902Department of Physics, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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JIANG Peng, WANG Li-Li, NING Yan-Xiao et al 2009 Chin. Phys. Lett. 26 016803 |
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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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Received: 25 August 2008
Published: 24 December 2008
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| PACS: |
68.37.Ef
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(Scanning tunneling microscopy (including chemistry induced with STM))
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68.43.Mn
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(Adsorption kinetics ?)
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68.47.De
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(Metallic surfaces)
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