Journal
PHYSICAL REVIEW LETTERS
Volume 95, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.95.076102
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We examine the dynamics of alloy growth by vapor deposition and bulk diffusion, predicting a new type of self-organized growth. When material is deposited at a composition unstable against spinodal decomposition, we find three distinct regimes depending on growth rate. Intermediate growth rates lead to spontaneous formation of a superlattice with layers parallel to the surface. Slow growth leads to more complex three-dimensional decomposition. For fast growth, the alloy composition remains uniform near the surface, with a composition wave propagating up from the interface.
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