Dimer-flipping-assisted diffusion on a Si(001) surface

Authors
Zi, J Min, BJ Lu, Y Wang, CZ Ho, KM
Citation
J. Zi et al., Dimer-flipping-assisted diffusion on a Si(001) surface, APPL PHYS L, 77(25), 2000, pp. 4184-4186
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
77
Issue
25
Year of publication
2000
Pages
4184 - 4186
Database
ISI
SICI code
0003-6951(200012)77:25<4184:DDOASS>2.0.ZU;2-V
Abstract
The binding sites and diffusion pathways of Si adatoms on a c(4x2) reconstr ucted Si(001) surface are investigated by a tight-binding method with an en vironment-dependent silicon potential in conjunction with ab initio calcula tions using the Car-Parrinello method. A new diffusion pathway along the tr ough edge driven by dimer flipping is found with a barrier of 0.74 eV, comp arable to that of 0.68 eV along the top of the dimer rows. (C) 2000 America n Institute of Physics. [S0003-6951(01)03401-5].