J. Phys. I France
Volume 7, Numéro 12, December 1997
Page(s) 1627 - 1638
DOI: 10.1051/jp1:1997105
J. Phys. I France 7 (1997) 1627-1638

Damping of Growth Oscillations in Molecular Beam Epitaxy: A Renormalization Group Approach

Martin Rost and Joachim Krug

Fachbereich Physik, Universität GH Essen, 45117 Essen, Germany

(Received 28 July 1997, accepted 28 August 1997)

The conserved Since-Gordon equation with nonconserved shot noise is used to model homoepitaxial crystal growth. With increasing coverage the renormalized pinning potential changes from strong to weak. This is interpreted as a transition from layer-by-layer to rough growth. The associated length and time scales are identified, and found to agree with recent scaling arguments. A heuristically postulated nonlinear term $\nabla^2(\nabla h)^2$ is created under renormalization.

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