Citation
Zy. Lu et al., Correlated piecewise diffusion of a Ge ad-dimer on the Si(001) surface, PHYS REV B, 62(12), 2000, pp. 8104-8107
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829
→ ACNP
Volume
62
Issue
12
Year of publication
2000
Pages
8104 - 8107
Database
ISI
SICI code
0163-1829(20000915)62:12<8104:CPDOAG>2.0.ZU;2-L
Abstract
We have performed extensive first-principles calculations to study the bind
ing and diffusion of a Ge ad-dimer on the Si(001) surface. The diffusion of
a Ge ad-dimer along the lowest-energy-barrier pathway is found to be piece
wise but with strong correlation, and its energy barrier is 0.77 eV. Such a
correlated piecewise diffusion pathway is also found to be favored by a Si
ad-dimer on Si(001), with an energy barrier of 1.02 eV in excellent agreem
ent with experimental measurements.