Photoelectron diffraction determination of the geometry of a clean metal surface: Ta(100)

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

DOI:https://doi.org/10.1103/PhysRevB.40.5340· OSTI ID:5651431

Bartynski, R A ^[1]; Heskett, D ^[2]; Garrison, K ^[3]; Watson, G M ^[2]; Zehner, D M ^[4]

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1. Department of Physics and Astronomy, Rutgers University, P.O. Box 849, Piscataway, New Jersey 08855-0849 (US)
2. Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6396
3. Department of Physics and Astronomy, Rutgers University, P.O. Box 849, Piscataway, New Jersey 08855-0849
4. Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak

The ratio of photoemission intensities from the bulk- and surface-shifted 4{ital f} core levels of the clean Ta(100) surface was measured in two different modes: as a function of photon energy at normal emission and as a function of polar angle near the (011) azimuth at {h bar}{omega}=65 eV. We have also performed a multiple-scattering photoemission calculation for several first interlayer spacings ranging from the bulk value to a 15% contraction. The best agreement with experiment was obtained for a (10{plus minus}5)% contraction of the first interlayer spacing.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5651431
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:8; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
EMISSION
ENERGY LEVELS
F STATES
METALS
MULTIPLE SCATTERING
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SCATTERING
SECONDARY EMISSION
SPECTROSCOPY
SURFACES
TANTALUM
TRANSITION ELEMENTS