Wolf, Dietrich; Villain, Jacques:
Growth with surface-diffusion
In: Europhysics letters - epl, Jg. 13 ; Heft 5, S. 389 - 394
Zeitschriftenaufsatz / Fach: Physik
Growth with surface-diffusion
Wolf, Dietrich im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Villain, Jacques
Erschienen in:
Europhysics letters - epl, Jg. 13 ; Heft 5, S. 389 - 394
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A simple growth model is investigated where particles are deposited onto a substrate randomly and subsequently relax into a position nearby where the binding is strongest. In space dimension d = 2 the surface roughness exponent and the dynamical exponent are ξ = 1.4 ± 0.1 and z = 3.8 ± 0.5. These values are larger than for previous models of sedimentation or ballistic deposition and are surprisingly close to the ones obtained from a linear generalized Langevin equation for growth with surface diffusion. A scaling relation 2ξ = z − d + 1 is proposed to be valid for a large class of growth models relevant for molecular beam epitaxy.