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
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 22333
- DOI 10.1088/0953-8984/23/13/135003
- Persistent URL
- https://folia.unifr.ch/unifr/documents/301842
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