Photoemission from graphite: Intrinsic and self-energy effects

Journal Article · Wed Aug 15 00:00:00 EDT 2001 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.64.075105· OSTI ID:40230855

Strocov, V N; Charrier, A; Themlin, J -M; Rohlfing, M; Claessen, R; Barrett, N; Avila, J; Sanchez, J; Asensio, M -C

We report a photoemission study on high-quality single-crystal graphite epitaxially grown on SiC. The results are interpreted using independent information on the final states obtained by very-low-energy electron diffraction. Significant intrinsic photoemission and surface effects are identified, which distort the photoemission response and narrow the observed dispersion range of the {pi} state. We assess its true dispersion range using a model photoemission calculation. A significant dependence of the excited-state self-energy effects on the wave-function character is found. The experimental results are compared with a GW calculation.

• Sponsoring Organization: (US)
• OSTI ID: 40230855
• Journal Information: Physical Review B, Vol. 64, Issue 7; Other Information: DOI: 10.1103/PhysRevB.64.075105; Othernumber: PRBMDO000064000007075105000001; 045123PRB; PBD: 15 Aug 2001; ISSN 0163-1829
• Publisher: The American Physical Society
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRON DIFFRACTION
GRAPHITE
PHOTOEMISSION
SELF-ENERGY