We have studied the interaction in the contact regime between a pyramidal gold tip and a Pb(110) surface using molecular dynamics simulation. Runs have been done at room temperature and in the surface melting regime of the substrate. We present results on the force acting on the tip as a function of distance, and on the formation of adhesion necks, their nature and their effect on the structural and diffusive properties of the substrate. The adhesion neck between the tip and a melted surface has also a liquid-like nature, explaining recent STM observations.
Microscopic interaction between a gold tip and a Pb(110) surface / Tomagnini, O.; Ercolessi, F.; Tosatti, Erio. - In: SURFACE SCIENCE. - ISSN 0039-6028. - 287:Part B(1993), pp. 1041-1045. [10.1016/0039-6028(93)91123-7]
Microscopic interaction between a gold tip and a Pb(110) surface
Tosatti, Erio
1993-01-01
Abstract
We have studied the interaction in the contact regime between a pyramidal gold tip and a Pb(110) surface using molecular dynamics simulation. Runs have been done at room temperature and in the surface melting regime of the substrate. We present results on the force acting on the tip as a function of distance, and on the formation of adhesion necks, their nature and their effect on the structural and diffusive properties of the substrate. The adhesion neck between the tip and a melted surface has also a liquid-like nature, explaining recent STM observations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
