Force, current and field effects in single atom manipulation

K.-F. Braun, S. Hla, N. Pertaya, W.H. Soe, C.F.J. Flipse, K. Rieder

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


We present a detailed investigation of the manipulation of Ag and Au atoms with a STM tip on the Ag(111) surface at 5K. The interpretation of the feed-back loop signal gives a precise picture of the movement of the atom during manipulation. The threshold tunnelling resistance and tip-height to move a Au/Ag atom have been determined using automated manipulation measurements. The results show that at low biases chemical forces dominate in the manipulation process. Above ±70 mV tunnelling voltage Au atoms start to move already at greater tip-atom separation, which can be attributed to a current effect. Tip-induced diffusion was used to measure the influence of the electric field which can be ruled out at low biases. ©2003 American Institute of Physics
Original languageEnglish
Title of host publicationInternational Conference on Scanning Tunneling Microscopy/Spectroscopy and Related Techniques ; 12 (Eindhoven) : 2003.07.21-25
Place of PublicationMelville
PublisherAmerican Institute of Physics
ISBN (Print)0-7354-0168-3
Publication statusPublished - 2003

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X


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