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Silicon adatom chains and one-dimensionally confined electrons on 4H-SiC(1-102): The (2x1) reconstruction
Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.
Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.
Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany.
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
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2008 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 602, no 22, 3506-3509 p.Article in journal (Refereed) Published
Abstract [en]

The electronic and atomic structure of the 4H-SiC surface was investigated. Photoemission data indicate that the surface contains about 2 Si layers on top of the bulk layers. Scanning tunneling microscopy images show that these adlayers are terminated by an ordered array of adatom chains separated by the unit cell size. An electronic surface state located at a binding energy of 0.8 eV shows one-dimensional confinement with dispersion only along the chains. Based on the experimental observations, a tentative (2 × 1) surface model is derived with the surface terminated by alternating chains of Si adatoms and Si dimers in between.

Place, publisher, year, edition, pages
Elsevier, 2008. Vol. 602, no 22, 3506-3509 p.
Keyword [en]
Low energy electron diffraction (LEED); Angle resolved photoemission; Scanning tunneling microscopy; Surface relaxation and reconstruction; Surface electronic phenomena (work function, surface potential, surface states, etc.); Silicon carbide; Single crystal surfaces; Adatoms
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Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-78517DOI: 10.1016/j.susc.2008.09.026ISI: 000261361100009OAI: oai:DiVA.org:liu-78517DiVA: diva2:533616
Available from: 2012-06-14 Created: 2012-06-14 Last updated: 2017-12-07Bibliographically approved

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Virojanadara, ChariyaJohansson, Leif I.

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