Interpretation of atomic friction experiments based on atomistic simulations

Atomic stick-slip experiments on the KBr(400) surface are analyzed using classical zero temperature atomistic simulations. Three different tip models exhibiting atomic stick-slip movement are studied in comparison with the experimental data and the Tomlinson model. The implications of a compliant tip apex for the stick-slip process and the dissipation pathways are discussed. (C) 2007 American Vacumn Society.