ATOMIC-STRUCTURE OF THE SB-STABILIZED GAAS(100)-(2X4) SURFACE

Authors
ESSER N SHKREBTII AI RESCHESSER U SPRINGER C RICHTER W SCHMIDT WG BECHSTEDT F DELSOLE R
Citation
N. Esser et al., ATOMIC-STRUCTURE OF THE SB-STABILIZED GAAS(100)-(2X4) SURFACE, Physical review letters, 77(21), 1996, pp. 4402-4405
Citations number
33
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
77
Issue
21
Year of publication
1996
Pages
4402 - 4405
Database
ISI
SICI code
0031-9007(1996)77:21<4402:AOTSGS>2.0.ZU;2-T
Abstract
The microscopic structure of the Sb stabilized GaAs(100)-(2 x 4) surfa ces is investigated combining reflectance anisotropy spectroscopy with first-principles total energy minimization and tight-binding calculat ions of optical properties. We show that the model accepted so far, co ntaining three Sb dimers in the outermost layer, is not a stable surfa ce geometry. Our results reveal a coexistence of Sb and Ga dimers on t he Sb-stabilized (2 x 4) surface.