Angle-resolved photoemission studies of the valence-band structure of stepped crystal surfaces: Cu(S)-(3(111) x (100))
Angle-resolved photoemission spectra are reported for the stepped Cu(211) face in the photon-energy range 9< or =h..nu..< or =34 eV. The valence-band (VB) spectra are interpreted in terms of a direct-transition model for bulk photoemission. Determination of VB dispersion relations and assignment of the bands are aided by use of selection rules involving the transmitted-radiation vector potential and several different experimental geometries. The major results are (1) it is possible to determine experimental VB dispersion relations for a lower-symmetry direction such as Cu(211), and (2) VB dispersion relations for stepped Cu(211) show excellent agreement with bulk valence bands interpolated along the (211) direction, uninterrupted by band-gap photoemission, the effects of which are not observed. It is concluded that the unusual structure of the stepped surface does not significantly perturb the bulk electronic structure near the surface in this case.
- Research Organization:
- Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 and Department of Chemistry, University of California, Berkeley, California 94720
- OSTI ID:
- 6105964
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 31:4; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
ANGULAR DISTRIBUTION
AUGER ELECTRON SPECTROSCOPY
BREMSSTRAHLUNG
COHERENT SCATTERING
COPPER
CRYSTALS
DATA
DIFFRACTION
DISPERSION RELATIONS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELECTRON DIFFRACTION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
METALS
MONOCRYSTALS
NUMERICAL DATA
PHOTOELECTRON SPECTROSCOPY
RADIATIONS
SCATTERING
SELECTION RULES
SPECTROSCOPY
SURFACES
SYNCHROTRON RADIATION
TRANSITION ELEMENTS
ULTRAHIGH VACUUM