Atomic ordering and the surface morphology of thin films
- 13 July 1998
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (2) , 208-210
- https://doi.org/10.1063/1.121757
Abstract
The formation of ordered phases and associated surface instabilities during the growth of alloy films is studied using a nonequilibrium model. It is shown that considerations of the epitaxial thermodynamic energy as well as dynamical processes at the surface lead to a coupling between the order parameter, the composition and the surface morphology. It is demonstrated that the stability of the growing layer against atomic ordering depends on the growth rate and that even when the surface-selected ordered phase is thermodynamically unstable, the system can spontaneously order.Keywords
This publication has 11 references indexed in Scilit:
- Alloy decomposition and surface instabilities in thin filmsPhysical Review B, 1998
- Ordering and Roughening during the Epitaxial Growth of AlloysPhysical Review Letters, 1996
- Effect of step structure on ordering in GaInPApplied Physics Letters, 1995
- Surface dimerization induced CuPtB versus CuPtA ordering of GaInP alloysApplied Physics Letters, 1995
- Surface topography and ordering-variant segregation in GaInP2Applied Physics Letters, 1993
- Interplay between evolving surface morphology, atomic-scale growth modes, and ordering during epitaxyPhysical Review Letters, 1993
- Coherent epitaxy, surface effects, and semiconductor alloy phase diagramsJournal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, 1992
- Use of surface grooves to control ordering in GaAsPApplied Physics Letters, 1991
- Effects of step motion on ordering in GaInPApplied Physics Letters, 1991
- Surface-stress-induced order in SiGe alloy filmsPhysical Review Letters, 1990