Correlation between surface core levels and surface states in Si(111)-(7 times 7) probed by Ag adsorption

Journal Article · Thu Nov 15 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.9245· OSTI ID:6191608

Samsavar, A; Miller, T; Chiang, T ^[1]

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1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, IL (USA) Materials Research Laboratory, University of Illinois at Urbana-Champaign, 104 South Goodwin Avenue, Urbana, IL (USA)

Synchrotron-radiation photoemission is employed to examine the spectral modifications caused by Ag adsorption on Si(111)-(7{times}7). There is a correlation between the adatom-derived surface state at a binding energy of 0.3 eV and a surface core-level component at a binding energy 0.8 eV lower than that of the bulk core-level component; both are completely suppressed at a 1/4 monolayer Ag coverage. This result suggests that the same surface core-level component is derived from the adatoms.

• DOE Contract Number: AC02-76ER01198
• OSTI ID: 6191608
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:14; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ADSORPTION
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
MEDIUM TEMPERATURE
METALS
PHOTOELECTRON SPECTROSCOPY
RADIATIONS
SEMIMETALS
SILICON
SILVER
SORPTION
SPECTROSCOPY
SURFACE PROPERTIES
SYNCHROTRON RADIATION
TRANSITION ELEMENTS