TITLE

Three-dimensional analysis of shape transitions in strained-heteroepitaxial islands

AUTHOR(S)
Zhang, Y. W.; Bower, A. F.
PUB. DATE
April 2001
SOURCE
Applied Physics Letters;4/30/2001, Vol. 78 Issue 18, p2706
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A continuum model of shape transitions in strained heteroepitaxial islands predicts that small islands are hut shaped, while larger islands are domed. The volume of a stable hut can exceed that of a stable dome, however, indicating that the stability of hut-shaped islands plays an important role in shape transition, in addition to energy changes associated with the transition. A hut-shaped island loses stability upon reaching a critical volume, which depends on the anisotropy in surface energy. Impingement between islands reduces the critical volume by nucleating new facets at the base of a hut, which subsequently trigger a shape transition. © 2001 American Institute of Physics.
ACCESSION #
4711343

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics