| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Mapping the Diffusion Potential of a Reconstructed Au(111) Surface at Nanometer Scale with 2D Molecular Gas |
| YAN Shi-Chao1,XIE Nan1,2,GONG Hui-Qi1,SUN Qian2,GUO Yang1,SHAN Xin-Yan1,LU Xing-Hua1** |
1Beijing National Laboratory for Condensed-Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190
2Photonics Center, College of Physics Science, Nankai University, Tianjin 300071 |
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| Cite this article: |
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YAN Shi-Chao, XIE Nan, GONG Hui-Qi et al 2012 Chin. Phys. Lett. 29 046803 |
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Abstract The adsorption and diffusion behaviors of benzene molecules on an Au(111) surface are investigated by low-temperature scanning tunneling microscopy. A herringbone surface reconstruction of the Au(111) surface is imaged with atomic resolution, and significantly different behaviors are observed for benzene molecules adsorbed on step edges and terraces. The electric field induced modification in the molecular diffusion potential is revealed with a 2D molecular gas model, and a new method is developed to map the diffusion potential over the reconstructed Au(111) surface at the nanometer scale.
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| Keywords:
68.35.bd
68.43.Jk
68.43.Fg
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Received: 26 February 2012
Published: 04 April 2012
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| PACS: |
68.35.bd
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(Metals and alloys)
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68.43.Jk
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(Diffusion of adsorbates, kinetics of coarsening and aggregation)
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68.43.Fg
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(Adsorbate structure (binding sites, geometry))
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