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Unoccupied electronic structure of graphite probed by angle-resolved photoemission spectroscopy

Krishnakumar, S. K. Mahatha; Menon, S. R. and Thiagarajan, Balasubramanian LU (2011) In Physical Review B (Condensed Matter and Materials Physics) 84(11).
Abstract
We report the observation of anomalous bands in graphite valence band structure in angle-resolved photoemission spectroscopy (ARPES) experiments. The photon energy dependence of these bands shows a constant kinetic energy nature. Our results are supported by the very low energy electron diffraction data reported on graphite surfaces which essentially map the unoccupied states representing the photoemission final states. This suggests that the ARPES technique is capable of probing the unoccupied electronic states governed by the secondary electron emission process, along with the occupied bands of solids.
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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
84
issue
11
publisher
American Physical Society
external identifiers
  • wos:000295006600001
  • scopus:80053589148
ISSN
1098-0121
DOI
10.1103/PhysRevB.84.113106
language
English
LU publication?
yes
id
ac090772-c2bf-487d-a37a-4e30b5325f2b (old id 2180114)
date added to LUP
2011-10-25 09:40:56
date last changed
2017-01-01 06:36:38
@article{ac090772-c2bf-487d-a37a-4e30b5325f2b,
  abstract     = {We report the observation of anomalous bands in graphite valence band structure in angle-resolved photoemission spectroscopy (ARPES) experiments. The photon energy dependence of these bands shows a constant kinetic energy nature. Our results are supported by the very low energy electron diffraction data reported on graphite surfaces which essentially map the unoccupied states representing the photoemission final states. This suggests that the ARPES technique is capable of probing the unoccupied electronic states governed by the secondary electron emission process, along with the occupied bands of solids.},
  articleno    = {113106},
  author       = {Krishnakumar, S. K. Mahatha and Menon, S. R. and Thiagarajan, Balasubramanian},
  issn         = {1098-0121},
  language     = {eng},
  number       = {11},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Unoccupied electronic structure of graphite probed by angle-resolved photoemission spectroscopy},
  url          = {http://dx.doi.org/10.1103/PhysRevB.84.113106},
  volume       = {84},
  year         = {2011},
}