Atomic-scale stick-slip processes on Cu(111)
- 15 October 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 60 (16) , R11301-R11304
- https://doi.org/10.1103/physrevb.60.r11301
Abstract
Friction force microscopy experiments in ultrahigh vacuum allow the observation of atomic-scale stick-slip processes on Cu(111) surfaces. The lateral stiffness of the contact and the electrical characteristic of the junction are discussed. It is suggested that the tip is covered by copper forming a contact of a few atoms with the Cu(111) surface. The mean friction exhibits a clear dependence on the scan velocity.Keywords
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