Diffraction of He and Ne and selective adsorption of He on Rh(110)

Journal Article · Fri Sep 15 00:00:00 EDT 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.6012· OSTI ID:5504688

Parschau, G; Kirsten, E ^[1]; Bischof, A ^[2]; Rieder, K H ^[3]

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1. Fachbereich Physik, Freie Universitaet Berlin, Arnimallee 14, D-1000 Berlin 33, West Germany (DE)
2. IBM Research Laboratory, Ruschlikon, Saumerstrasse 4, CH-8803 Ruschlikon, Switzerland
3. Fachbereich Physik, Freie Universitat Berlin, Arnimallee 14, D-1000 Berlin 33, West Germany

Diffraction studies on clean Rh(110) have been performed with room-temperature and low-temperature He and Ne beams. The corrugation amplitude perpendicular to the close-packed rows as observed with He is {ital z}(01)=0.15 A. Regarding analogous data for Ni, Cu, Pd, and Ag, this value fits well into the now clearly discernible trend that {ital z}(01) increases strongly with increasing lattice constant. The corrugation amplitude along the close-packed rows, {ital z}(10), on the other hand, does not show such systematic behavior. Compared to the other metals, the value for Rh, {ital z}(10)=0.065 A, is exceptionally large. {ital z}(01) measured with Ne is about twice as large as observed with He in accord with previous observations on other metals. Selective adsorption structures of He on Rh (110) were traced with low-temperature beams of different wavelengths and allowed the determination of four bound-state levels. The measured energies were fitted with different analytical potential forms and yield a potential-well depth of {similar to}8.2 meV.

• OSTI ID: 5504688
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 39:9; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
BOUND STATE
COHERENT SCATTERING
COLLISIONS
CRYSTALS
DIFFRACTION
ELEMENTS
ENERGY LEVELS
FLUIDS
GASES
HELIUM
LOW TEMPERATURE
MEDIUM TEMPERATURE
METALS
MONOCRYSTALS
NEON
NONMETALS
POTENTIALS
RARE GASES
RHENIUM
SCATTERING
SORPTION
TRANSITION ELEMENTS