Advanced

Surface electronic structure of the organic superconductor K-(ET)(2)Cu(NCS)(2) studied via photoemission microscopy

Downes, JE; Smith, KE; Matsuura, AY; Lindau, Ingolf LU and Schlueter, JA (2004) In Surface Science 551(3). p.219-227
Abstract
The surface electronic structure of cleaved single crystals of the organic superconductor kappa-(ET)(2)Cu(NCS)(2) has been studied using photoemission microscopy. Two types of cleaved surfaces were observed, displaying different valence band photoemission spectra and different spectral behavior near the Fermi level, EF. In particular, spectra from one surface type display relatively broad spectral features in the valence band and finite spectral intensity at EF, while spectra from the other surface type show well-defined valence band emission features and zero photoemission intensity at EF. We propose that the spectral differences are due to a very short electron mean free path in this material, and our results are used to explain the... (More)
The surface electronic structure of cleaved single crystals of the organic superconductor kappa-(ET)(2)Cu(NCS)(2) has been studied using photoemission microscopy. Two types of cleaved surfaces were observed, displaying different valence band photoemission spectra and different spectral behavior near the Fermi level, EF. In particular, spectra from one surface type display relatively broad spectral features in the valence band and finite spectral intensity at EF, while spectra from the other surface type show well-defined valence band emission features and zero photoemission intensity at EF. We propose that the spectral differences are due to a very short electron mean free path in this material, and our results are used to explain the differences between previously published photoemission spectra from this superconductor. We also report the results of an investigation of the electronic structure of defects in this material. (C) 2004 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
surfaces, surface defects, radiation damage, insulating, metallic surfaces, superconducting surfaces, synchrotron radiation photoelectron spectroscopy, single crystal
in
Surface Science
volume
551
issue
3
pages
219 - 227
publisher
Elsevier
external identifiers
  • wos:000189254600008
  • scopus:1142293168
ISSN
0039-6028
DOI
10.1016/j.susc.2003.12.050
language
English
LU publication?
yes
id
b485ac7d-492a-405f-844e-bc1ae3a7d4c0 (old id 285710)
date added to LUP
2007-10-24 11:23:45
date last changed
2017-04-02 04:02:12
@article{b485ac7d-492a-405f-844e-bc1ae3a7d4c0,
  abstract     = {The surface electronic structure of cleaved single crystals of the organic superconductor kappa-(ET)(2)Cu(NCS)(2) has been studied using photoemission microscopy. Two types of cleaved surfaces were observed, displaying different valence band photoemission spectra and different spectral behavior near the Fermi level, EF. In particular, spectra from one surface type display relatively broad spectral features in the valence band and finite spectral intensity at EF, while spectra from the other surface type show well-defined valence band emission features and zero photoemission intensity at EF. We propose that the spectral differences are due to a very short electron mean free path in this material, and our results are used to explain the differences between previously published photoemission spectra from this superconductor. We also report the results of an investigation of the electronic structure of defects in this material. (C) 2004 Elsevier B.V. All rights reserved.},
  author       = {Downes, JE and Smith, KE and Matsuura, AY and Lindau, Ingolf and Schlueter, JA},
  issn         = {0039-6028},
  keyword      = {surfaces,surface defects,radiation damage,insulating,metallic surfaces,superconducting surfaces,synchrotron radiation photoelectron spectroscopy,single crystal},
  language     = {eng},
  number       = {3},
  pages        = {219--227},
  publisher    = {Elsevier},
  series       = {Surface Science},
  title        = {Surface electronic structure of the organic superconductor K-(ET)(2)Cu(NCS)(2) studied via photoemission microscopy},
  url          = {http://dx.doi.org/10.1016/j.susc.2003.12.050},
  volume       = {551},
  year         = {2004},
}