Angle-resolved photoemission extended fine structure of the Ni 3p, Cu 3s, and Cu 3p core levels of the respective clean (111) surfaces

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.1540· OSTI ID:527003

Huff, W R ^[1]; Chen, Y ^[2]; Kellar, S A; Moler, E J ^[1]; Hussain, Z ^[1]; Huang, Z Q ^[3]; Zheng, Y ^[4]; Shirley, D A ^[2]

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1. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
2. The Pennsylvania State University, Department of Chemistry and Physics, University Park, Pennsylvania 16802 (United States)
3. James Franck Institute, University of Chicago, Illinois 60637 (United States)
4. Oplink, San Jose, California 95131 (United States)

We report a non-s initial-state angle-resolved photoemission extended fine-structure (ARPEFS) study of clean surfaces for the purpose of further understanding the technique. The surface structure sensitivity of ARPEFS applied to clean surfaces and to arbitrary initial states is studied using normal photoemission data taken from the Ni 3p core levels of a Ni(111) single crystal and the Cu 3s and the Cu 3p core levels of a Cu(111) single crystal. The Fourier transforms of these clean surface data are dominated by backscattering. Unlike the s initial-state data, the p initial-state data show a peak in the Fourier transform corresponding to in-plane scattering from the six nearest neighbors to the emitter. Evidence was seen for single-scattering events from the same plane as the emitters and double-scattering events. Using a recently developed, multiple-scattering calculation program, ARPEFS data from clean surfaces and from p initial states can be modeled to high precision. Although there are many layers of emitters when measuring photoemission from a clean surface, test calculations show that the ARPEFS signal is dominated by photoemission from atoms in the first two crystal layers. Thus ARPEFS applied to clean surfaces is sensitive to surface reconstruction. The best-fit calculation for clean Ni(111) indicates an expansion of the first two layers. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 527003
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 3 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COPPER
DIFFRACTION
ELECTRONIC STRUCTURE
FINE STRUCTURE
FOURIER TRANSFORMATION
HOLOGRAPHY
MONOCRYSTALS
MULTIPLE SCATTERING
NICKEL
PHOTOEMISSION