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  Electronic Structure of Self-Assembled Ag Nanowires on Si(557): Spectroscopic Evidence for Dimensionality

Nicholson, C., Monney, C., Krieg, U., Tegenkamp, C., Pfnür, H. E., Horn, K., et al. (2015). Electronic Structure of Self-Assembled Ag Nanowires on Si(557): Spectroscopic Evidence for Dimensionality. New Journal of Physics, 17(9): 093025. doi:10.1088/1367-2630/17/9/093025.

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 Creators:
Nicholson, Christopher1, Author              
Monney, Claude2, Author
Krieg, Ulrich3, Author
Tegenkamp, Christoph3, Author
Pfnür, Herbert E.3, Author
Horn, Karsten1, Author              
Wolf, Martin1, Author              
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Institute of Physics, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland, ou_persistent22              
3Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstrasse 2, Hannover, Germany, ou_persistent22              

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 Abstract: We investigate the electronic structure of silver nanowires at 1 monolayer (ML) Ag coverage on a vicinal Si(557) substrate by angle-resolved photoemission spectroscopy. Fermi surface mapping reveals two-dimensional (2D) Ag-induced electron pockets, which shift to higher binding energies by n-type doping of the step edges. The electronic structure of the 1 ML Ag/Si(557) system exhibits additional 2D metallic states near the Fermi level, which may originate from substrate induced periodicities. By considering the confining potential and electronic coherence length we reconcile the seemingly conflicting views of the dimensionality in this system probed by photoemission spectroscopy, and the dispersion of collective excitations as detected by electron energy loss spectroscopy .

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Language(s): eng - English
 Dates: 2015-06-302015-08-182015-09-16
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1088/1367-2630/17/9/093025
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Title: New Journal of Physics
  Abbreviation : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: 8 Volume / Issue: 17 (9) Sequence Number: 093025 Start / End Page: - Identifier: ISSN: 1367-2630
CoNE: https://pure.mpg.de/cone/journals/resource/954926913666