Microscopic structure of spontaneously formed islands on the GaAs(001)-(2X4) reconstructed surface

Authors
LaBella, VP Ding, Z Bullock, DW Emery, C Thibado, PM
Citation
Vp. Labella et al., Microscopic structure of spontaneously formed islands on the GaAs(001)-(2X4) reconstructed surface, J VAC SCI B, 19(4), 2001, pp. 1640-1643
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
ISSN journal
10711023 → ACNP
Volume
19
Issue
4
Year of publication
2001
Pages
1640 - 1643
Database
ISI
SICI code
1071-1023(200107/08)19:4<1640:MSOSFI>2.0.ZU;2-X
Abstract
Islands are found to spontaneously form on the GaAs(001)-(2X4) reconstructe d surface. The geometry and size of these islands are examined as a functio n of substrate temperature and island coverage. Both the islands' coverage and size increase with increasing temperature. The islands are elongated re ctangles and the aspect ratio is independent of temperature. A relationship between the islands' aspect ratio and the step formation energies is prese nted. These results are also related to recent theoretical work on equilibr ium island geometry. (C) 2001 American Vacuum Society.