Mathematics, Physics and Astronomy, Ames Laboratory
Journal or Book Title
Physical Review Letters
A "step dynamics" model is developed for mound formation during multilayer homoepitaxy. Downward funneling of atoms deposited at step edges is incorporated and controls mound slope selection. Behavior of the selected slope differs from that predicted by phenomenological continuum treatments where the lateral mass current vanishes identically. Instead, this current is shown to vary periodically and vanish only on average. An exact coarse-grained continuum formulation with appropriate boundary conditions is derived and recovers step dynamics results.
American Physical Society
Li, Maozhi and Evans, James W., "Theoretical Analysis of Mound Slope Selection during Unstable Multilayer Growth" (2005). Mathematics Publications. 9.