Journal article

Valence band structure of the Si(331)-(12 × 1) surface reconstruction

  • Battaglia, Corsin Ecole Polytechnique Fédérale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin Film Electronics Laboratory, Neuchâtel, Switzerland
  • Schwier, Eike Fabian Department of Physics and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Monney, Claude Department of Physics and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland - Paul Scherrer Institut, Research Department Synchrotron Radiation and Nanotechnology, Villigen, Switzerland
  • Didiot, Clément Department of Physics and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Mariotti, Nicolas Department of Physics and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Gaál-Nagy, Katalin Dipartimento di Fisica and European Theoretical Spectroscopy Facility (ETSF), Università degli Studi di Milano, Italy
  • Onida, Giovanni Dipartimento di Fisica and European Theoretical Spectroscopy Facility (ETSF), Università degli Studi di Milano, Italy
  • Garnier, Michael G. Department of Physics and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Aebi, Philipp Department of Physics and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
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    14.03.2011
Published in:
  • Journal of Physics: Condensed Matter. - 2011, vol. 23, no. 13, p. 135003
English Using angle-resolved photoelectron spectroscopy we investigate the electronic valence band structure of the Si(331)-(12 × 1) surface reconstruction for which we recently proposed a structural model containing silicon pentamers as elementary structural building blocks. We find that this surface, reported to be metallic in a previous study, shows a clear band gap at the Fermi energy, indicating semiconducting behavior. An occupied surface state, presumably containing several spectral components, is found centered at − 0.6 eV exhibiting a flat energy dispersion. These results are confirmed by scanning tunneling spectroscopy and are consistent with recent first-principles calculations for our structural model.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/301842
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