Holography of Ge(111)-[ital c](2[times]8) by surface core-level photoemission

Journal Article · Mon Dec 05 04:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.3117· OSTI ID:7082529

Sieger, M T; Roesler, J M; Lin, D; Miller, T; Chiang, T ^[1]

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1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080 (United States) Materials Research Laboratory, University of Illinois at Urbana-Champaign, 104 South Goodwin Avenue, Urbana, Illinois 61801-2902 (United States)

Energy-extended photoelectron holography has been applied for the first time to image surface structure using intrinsic surface core-level shifts. The Ge(111)-[ital c](2[times]8) 3[ital d] core level exhibits a surface component shifted by 0.8 eV relative to the bulk. Angle-resolved photoemission from this so-called [ital S]2 component shows intensity oscillations as a function of photon energy. Inversion of the data collected at many emission angles yields a three-dimensional image of the nearby atoms, showing conclusively that the [ital S]2 emission is due to adatoms bonded in [ital T][sub 4] sites.

• DOE Contract Number: FG02-91ER45439
• OSTI ID: 7082529
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:23; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360606 -- Other Materials-- Physical Properties-- (1992-)
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR DISTRIBUTION
CRYSTAL STRUCTURE
DISTRIBUTION
ELEMENTS
EMISSION
GERMANIUM
HOLOGRAPHY
METALS
MORPHOLOGY
PHOTOEMISSION
SECONDARY EMISSION
SURFACE PROPERTIES