ADSORPTION-SITE MIXING AT A CONTINUOUS ORDER-DISORDER PHASE-TRANSITION

Authors
SCHWENNICKE C SANDHOFF M SKLAREK W JURGENS D PFNUR H
Citation
C. Schwennicke et al., ADSORPTION-SITE MIXING AT A CONTINUOUS ORDER-DISORDER PHASE-TRANSITION, Physical review. B, Condensed matter, 52(3), 1995, pp. 2138-2143
Citations number
35
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
52
Issue
3
Year of publication
1995
Pages
2138 - 2143
Database
ISI
SICI code
0163-1829(1995)52:3<2138:AMAACO>2.0.ZU;2-W
Abstract
The temperature-dependent probability of occupation of the two threefo ld-coordinated adsorption sites was determined for the system S/Ru(000 1) at a coverage of 0.33, analysing energy-dependent intensity curves [I(E) curves] in low-energy electron diffraction of the ordered root 3 x root 3R30 degrees phase and of the disordered system. We show that this probability agrees fully with a lattice gas model containing a fi nite difference in adsorption energy between these sites.