A Model for Growth of Binary Alloys with Fast Surface Equilibration

Details A Model for Growth of Binary Alloys with Fast Surface Equilibration A Model for Growth of Binary Alloys with Fast Surface Equilibration

1996-10-01

arxiv.org/abs/cond-mat/9610014v1

Physics

Condensed Matter

Statistical Mechanics

7 pages RevTeX, 5 postscript figures

Scientific paper

10.1103/PhysRevE.55.5026

We study a simple growth model for (d+1)-dimensional films of binary alloys in which atoms are allowed to interact and equilibrate at the surface, but are frozen in the bulk. The resulting crystal is highly anisotropic: Correlations perpendicular to the growth direction are identical to a d-dimensional two-layer system in equilibrium, while parallel correlations generally reflect the (Glauber) dynamics of such a system. For stronger in-plane interactions, the correlation volumes change from oblate to highly prolate shapes near a critical demixing or ordering transition. In d=1, the critical exponent z relating the scaling of the two correlation lengths varies continuously with the chemical interactions.

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