Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3496622
Title: In situ ultrahigh vacuum transmission electron microscopy study of quasi-one-dimensional island decay on isotropic Ge(001) surface
Authors: Li, Z.-P.
Tok, E.S. 
Foo, Y.L.
Issue Date: 15-Oct-2010
Citation: Li, Z.-P., Tok, E.S., Foo, Y.L. (2010-10-15). In situ ultrahigh vacuum transmission electron microscopy study of quasi-one-dimensional island decay on isotropic Ge(001) surface. Journal of Applied Physics 108 (8) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3496622
Abstract: In situ ultrahigh vacuum transmission electron microscopy was employed to observe the dynamics of both the coalescence and decay of two-dimensional Fe13 Ge8 islands on an atomically smooth Ge(001) surface. Quasi-one-dimensional (1D) island decay behavior was observed on the isotropic Ge(001) surface where annealing caused the islands to shrink significantly faster in one direction. The shrinkage in the perpendicular direction was minimal in comparison. This is contrary to Ostwald ripening for isotropic surfaces, as well as for the quasi-1D island decay model for anisotropic surfaces. During annealing, this island decay behavior occurred by the attachment/detachment limiting mechanism, which is based on an analysis of adatom concentration differences. Therefore, this quasi-1D island decay process is driven by adatom concentration differences between coalescing and decaying islands. Island decay occurs along the large diffusive flux channel between islands and is affected by the local environment. © 2010 American Institute of Physics.
Source Title: Journal of Applied Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/96896
ISSN: 00218979
DOI: 10.1063/1.3496622
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