CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES

Mapping the Diffusion Potential of a Reconstructed Au(111) Surface at Nanometer Scale with 2D Molecular Gas

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2012 Chinese Physical Society and IOP Publishing Ltd
, , Citation Yan Shi-Chao et al 2012 Chinese Phys. Lett. 29 046803 DOI 10.1088/0256-307X/29/4/046803

0256-307X/29/4/046803

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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10.1088/0256-307X/29/4/046803