Atomic behavior at individual binding sites: Ir, Re, and W on Ir(111)

Journal Article · Mon Feb 24 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.1160· OSTI ID:7276653

Wang, S C; Ehrlich, G ^[1]

---

1. Materials Research Laboratory and Department of Materials Science Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)

It has for the first time become possible to make quantitative determinations of differences in energy and jump rate for adatoms at the two types of binding sites on a close-packed fcc (111) plane. For iridium on Ir(111), variations in the potential energy of an atom over the surface are found to be small. Binding energies are, however, strongly dependent upon the chemical identity of the adatom. For rhenium and tungsten, differences in binding at fcc and hcp sites are sizable. In contrast, the dynamics of jumps out of the two types of sites are similar for the same atom.

• DOE Contract Number: FG02-91ER45439
• OSTI ID: 7276653
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:8; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
ARRHENIUS EQUATION
BINDING ENERGY
CHEMICAL COMPOSITION
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DYNAMICS
ELEMENTS
ENERGY
EQUATIONS
IRIDIUM
MECHANICS
METALS
PLATINUM METALS
RHENIUM
SITE SELECTION
SORPTION
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
TUNGSTEN