32473 20180622111519.0 doi 10.1103/PhysRevB.89.075423 sideral 92366 ART-2014-92366 eng (orcid)0000-0003-2290-0010 Fajardo, O.Y. Out-of-plane and in-plane actuation effects on atomic-scale friction 2014 Access copy available to the general public Unrestricted The influence of out-of-plane and in-plane contact vibrations and temperature on the friction force acting on a sharp tip elastically pulled on a crystal surface is studied using a generalized Prandtl-Tomlinson model. The average friction force is significantly lowered in a frequency range determined by the "washboard" frequency of the stick-slip motion and the viscous damping accompanying the tip motion. An approximately linear relationship between the actuation amplitude and the effective corrugation of the surface potential is derived in the case of in-plane actuation, extending a similar conclusion for out-of-plane actuation. Temperature causes an additional friction reduction with a scaling relation in formal agreement with the predictions of reaction rate theory in the absence of contact vibrations. In this case the actuation effects can be described by the effective energy or, more accurately, by introducing an effective temperature. info:eu-repo/grantAgreement/ES/MINECO/FIS2011-25167 info:eu-repo/grantAgreement/ES/MINECO/MAT2012-34487 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 3.736 2014 PHYSICS, CONDENSED MATTER 14 / 66 = 0.212 2014 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Gnecco, E. (orcid)0000-0003-0698-6555 Mazo, J.J. Universidad de Zaragoza 2003 395 Universidad de Zaragoza Departamento de Física de la Materia Condensada Física de la Materia Condensada 89 (2014), 075423 [7 pp.] Phys. Rev. B, Condens. matter mater. phys. Physical Review B. Condensed Matter and Materials Physics 1098-0121 664586 http://zaguan.unizar.es/record/32473/files/texto_completo.pdf Versión publicada 129198 http://zaguan.unizar.es/record/32473/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:32473 articulos driver 2018-06-22-11:08:58 ARTICLE