Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2000-04-26
Physics
Condensed Matter
Statistical Mechanics
Written in REVTex, 10 pages, 6 figures in Postscript
Scientific paper
We investigate numerically a simple microscopic model to describe wearless dry friction between atomically flat contact interfaces without thermal fluctuations (T=0K). The analysis of the incommensurate ground state shows a breaking of analyticity when the amplitude $\epsilon$ of the Lennard-Jones interaction between the both harmonic chains increased beyond a critical value $\epsilon_c$. By the introduction of a suitable order parameter and using a finite size scaling we could show that the breaking of analyticity is a second order phase transition. This transition is often called Aubry transition. By applying of an uniform external force $F^{ex}$ we have determined the critical force of static friction $F_c$ above a sliding motion occurs.
Einax Mario
Hoeche H.-R.
Schulz Michael
Trimper Steffen
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