Absolute determination of surface core-level emission for Ge(100)-(2 x 1) and Ge(111)-c(2 x 8): Surface reconstruction and defects
Journal Article
·
· Phys. Rev. Lett.; (United States)
The number of surface atoms on Ge(100)-(2 x 1) and Ge(111)-c(2 x 8) which contribute to the Ge 3d core shift is determined by a combination of synchrotron photoemission, high-energy electron diffraction, and molecular-beam epitaxy techniques. The result is 0.87 +- 0.09 monolayer for Ge(100)-(2 x 1), revealing that the buckled dimer bond is primarily covalent in nature. The Ge(111)-c(2 x 8) surface shows ''adatom'' emission corresponding to 0.33 +- 0.04 monolayer; the departure from the ideal value of 0.5 monolayer is attributed to a large number of defects on the surface.
- Research Organization:
- Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
- DOE Contract Number:
- AC02-76ER01198
- OSTI ID:
- 5505691
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:4; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINDING ENERGY
BREMSSTRAHLUNG
CLEANING
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON DIFFRACTION
ELEMENTS
EMISSION
ENERGY
EPITAXY
FREE ENERGY
GERMANIUM
METALS
MOLECULAR BEAM EPITAXY
PHOTOEMISSION
PHYSICAL PROPERTIES
RADIATIONS
SCATTERING
SECONDARY EMISSION
SURFACE CLEANING
SURFACE ENERGY
SURFACE FINISHING
SURFACE PROPERTIES
SYNCHROTRON RADIATION
THERMODYNAMIC PROPERTIES
360603 -- Materials-- Properties
656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINDING ENERGY
BREMSSTRAHLUNG
CLEANING
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON DIFFRACTION
ELEMENTS
EMISSION
ENERGY
EPITAXY
FREE ENERGY
GERMANIUM
METALS
MOLECULAR BEAM EPITAXY
PHOTOEMISSION
PHYSICAL PROPERTIES
RADIATIONS
SCATTERING
SECONDARY EMISSION
SURFACE CLEANING
SURFACE ENERGY
SURFACE FINISHING
SURFACE PROPERTIES
SYNCHROTRON RADIATION
THERMODYNAMIC PROPERTIES