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Narrow photoemission lines from graphite valence states

Kihlgren, T; Thiagarajan, Balasubramanian LU ; Wallden, L and Yakimova, R (2002) In Physical Review B (Condensed Matter and Materials Physics) 66(23).
Abstract
Valence-band photoelectron angular distributions, measured in the photon energy range 20-150 eV, are obtained from crystalline graphite overlayers prepared by heating SiC(0001) and from a graphite natural single crystal. The dispersion of the valence bands for the overlayers agrees well with that of the single crystal. The valence electrons have binding energies, which agree with LDA calculations if the calculated binding energies are multiplied by a factor of 1.13. The upper sigma state at Gamma and states near the Fermi level at the zone corners give quite narrow emission lines. Since the widths are on par with that of the C 1s level the lines are of interest as an alternative to the core line when graphite is used as substrate for... (More)
Valence-band photoelectron angular distributions, measured in the photon energy range 20-150 eV, are obtained from crystalline graphite overlayers prepared by heating SiC(0001) and from a graphite natural single crystal. The dispersion of the valence bands for the overlayers agrees well with that of the single crystal. The valence electrons have binding energies, which agree with LDA calculations if the calculated binding energies are multiplied by a factor of 1.13. The upper sigma state at Gamma and states near the Fermi level at the zone corners give quite narrow emission lines. Since the widths are on par with that of the C 1s level the lines are of interest as an alternative to the core line when graphite is used as substrate for adsorption or absorption studies. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
66
issue
23
publisher
American Physical Society
external identifiers
  • wos:000180279400113
  • scopus:0037116106
ISSN
1098-0121
DOI
10.1103/PhysRevB.66.235422
language
English
LU publication?
yes
id
638da375-f8e6-42f9-be41-1982c758b7e5 (old id 909094)
date added to LUP
2008-01-23 12:00:17
date last changed
2017-01-01 06:54:31
@article{638da375-f8e6-42f9-be41-1982c758b7e5,
  abstract     = {Valence-band photoelectron angular distributions, measured in the photon energy range 20-150 eV, are obtained from crystalline graphite overlayers prepared by heating SiC(0001) and from a graphite natural single crystal. The dispersion of the valence bands for the overlayers agrees well with that of the single crystal. The valence electrons have binding energies, which agree with LDA calculations if the calculated binding energies are multiplied by a factor of 1.13. The upper sigma state at Gamma and states near the Fermi level at the zone corners give quite narrow emission lines. Since the widths are on par with that of the C 1s level the lines are of interest as an alternative to the core line when graphite is used as substrate for adsorption or absorption studies.},
  author       = {Kihlgren, T and Thiagarajan, Balasubramanian and Wallden, L and Yakimova, R},
  issn         = {1098-0121},
  language     = {eng},
  number       = {23},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Narrow photoemission lines from graphite valence states},
  url          = {http://dx.doi.org/10.1103/PhysRevB.66.235422},
  volume       = {66},
  year         = {2002},
}