Ion scattering study of the adatom induced missing-row reconstructions of Ni(110) and Au(113)

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States)

DOI:https://doi.org/10.1116/1.578004· OSTI ID:7111548

Jiang, Q T; Statiris, P; Gustafsson, T ^[1]; Haeberle, P ^[2]; Zehner, D M ^[3]

---

1. Department of Physics and Astronomy, and Laboratory for Surface Modification, Rutgers University, P.O. Box 849, Piscataway, New Jersey 08855-0849 (United States)
2. Departamento de Fisica, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile)
3. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6057 (United States)

Using medium-energy ion scattering with channeling and blocking, we have investigated the (1{times}2) reconstructions of Ni(110) and Au(113) (stabilized by submonolayer amounts of K and Ca, respectively). Our data contain evidence that the two surface structures correspond to missing-row type reconstructions. Monte Carlo simulations show that the first interlayer spacing of the (1{times}2)-Au(113) surface undergoes a large contraction ({minus}18.6%), while the first interlayer spacing of (1{times}2)-Ni(110) undergoes a small, unexpected expansion (+3%). Although the symmetry of Au(113) allows a lateral registry shift, none is found. Our structural models are discussed in terms of the energy balance between competing surface electronic charge densities.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7111548
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States) Vol. 10:4; ISSN JVTAD; ISSN 0734-2101
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALKALI METALS
ALKALINE EARTH METALS
CALCIUM
CHARGE DENSITY
COLLISIONS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
ELEMENTS
FCC LATTICES
GOLD
ION COLLISIONS
METALS
NICKEL
POTASSIUM
SURFACE PROPERTIES
TRANSITION ELEMENTS