Bulk versus surface effects in normal photoemission from Cu(110) in the range 32 < or = h. nu. < or = 160 eV

Journal Article · Sun Jan 15 00:00:00 EST 1978 · Phys. Rev., B; (United States)

DOI:https://doi.org/10.1103/PhysRevB.17.587· OSTI ID:5142956

Stoehr, J; Wehner, P S; Williams, R S; Apai, G; Shirley, D A

Synchrotron radiation in the 32-160-eV range was used to elucidate the role of bulk and surface effects in normal photoemission from the valence bands of a Cu(110) crystal. A dramatic resonance in the s-p band was observed for photon energies h..nu.. = 43-52 eV. We have used this resonance and the energy dependence of the spectra to study the role of surface-induced broadening of the momentum component perpendicular to the surface (k/sub perpendicular/). Our results strongly contradict previous interpretations of lower-energy studies in terms of a one-dimensional density of states along k/sub perpendicular/. We find that normal photoemission, applied over a sufficient energy range, can be used to map the initial-state bulk band structure.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
• OSTI ID: 5142956
• Journal Information: Phys. Rev., B; (United States), Vol. 17:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
PHOTOEMISSION
ELECTRONIC STRUCTURE
ENERGY DEPENDENCE
EV RANGE 10-100
EV RANGE 100-1000
SURFACE PROPERTIES
SYNCHROTRON RADIATION
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
ENERGY RANGE
EV RANGE
METALS
RADIATIONS
SECONDARY EMISSION
TRANSITION ELEMENTS
360104* - Metals &amp; Alloys- Physical Properties