Electronic and crystallographic properties of reconstructed and nonreconstructed Au[l brace]001[r brace]

Journal Article · Tue Mar 15 00:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.49.8353· OSTI ID:5153698

Wu, S C ^[1]; Li, H; Quinn, J; Tian, D; Li, Y S; Begley, A M; Kim, S K; Jona, F; Marcus, P M ^[2]

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1. Department of Materials Science and Engineering, State University of New York, Stony Brook, New York 11794-2275 (United States) Physics Department, Peking University, Beijing 100871 (China)
2. Department of Materials Science and Engineering, State University of New York, Stony Brook, New York 11794-2275 (United States)

Low-energy-electron-diffraction analyses of Fe-, Mn-, and Rh-stabilized Au[l brace]001[r brace]1[times]1 surfaces find the atomic structure to be a relaxed bulk termination. The first and the second interlayer spacings are contracted by about (2[plus minus]2.8)% and (2.8[plus minus]2.8)%, respectively, of the bulk spacing along [l angle]001[r angle]. Photoemission experiments with synchrotron radiation on reconstructed Au[l brace]001[r brace]5[times]20 find a surface-resonance band above the bulk [ital d] bands which exhibits dispersion with photon energies between 14 and 24 eV, in accordance with the buckled character of the hexagonal overlayer responsible for the surface reconstruction. All remaining features in the photoemission spectra from Au[l brace]001[r brace]5[times]20 can be explained on the basis of the self-consistent relativistic calculation of Eckardt, Fritsche, and Noffke to within 0.4 eV. Photoemission from Rh-stabilized Au[l brace]001[r brace]1[times]1 is similar to that from the reconstructed surface except for the surface resonance, which is markedly reduced on the 1[times]1 surface, and a shift of one band which points toward a transfer of [ital s]-like charge from the Rh to the Au atoms in the surface region.

• DOE Contract Number: FG02-86ER45239
• OSTI ID: 5153698
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 49:12; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GOLD
SURFACE PROPERTIES
IRON
ADSORPTION
MANGANESE
RHODIUM
CRYSTAL STRUCTURE
ELECTRON DIFFRACTION
ELECTRONIC STRUCTURE
PHONONS
PHOTOEMISSION
SELF-CONSISTENT FIELD
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
EMISSION
METALS
PLATINUM METALS
QUASI PARTICLES
SCATTERING
SECONDARY EMISSION
SORPTION
TRANSITION ELEMENTS
360602* - Other Materials- Structure & Phase Studies
360606 - Other Materials- Physical Properties- (1992-)