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Reversible Vertical Manipulations of Single Pt Adatom on Pt(111) Surface with a Triple-Apex Tip |
| XIE Yi-Qun;LIU Qing-Wei;ZHANG Peng;LI Yu-Fen;GAN Fu-Xi;ZHUANG Jun |
| Department of Optical Science and Engineering, State Key Joint Laboratory for Materials Modification by Laser, Ion and Electron Beams, Fudan University, Shanghai 200433 |
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| Cite this article: |
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XIE Yi-Qun, LIU Qing-Wei, ZHANG Peng et al 2008 Chin. Phys. Lett. 25 1056-1059 |
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Abstract With a triple-apex tip, we investigate theoretically the vertical manipulation of single Pt adatom on the Pt(111) surface. The adatom adsorbed on the fcc site of the flat Pt(111) surface can be transferred vertically to the tip by adjusting the tip height properly. Moreover, based on the strong vertical trapping ability and the relatively weak lateral trapping ability of the tip, we propose a simple
method to realize a reversible vertical manipulation of the Pt adatom from the highly coordinated sites, the kink and the step sites, of the stepped Pt(111) surface. All the vertical manipulations are completed using only the atomic force between the tip and the adatom, without the electric field.
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| Keywords:
68.35.Fx
68.35.Ja
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Received: 26 September 2007
Published: 27 February 2008
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| PACS: |
68.35.Fx
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(Diffusion; interface formation)
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68.35.Ja
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(Surface and interface dynamics and vibrations)
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