Details
| Original language | English |
|---|---|
| Article number | 093025 |
| Journal | New Journal of Physics |
| Volume | 17 |
| Issue number | 9 |
| Publication status | Published - 16 Sept 2015 |
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 .
Keywords
- 1D confining potential, dimensionality, doping, electronic structure, vicinal Si surface
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: New Journal of Physics, Vol. 17, No. 9, 093025, 16.09.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Electronic structure of self-assembled Ag nanowires on Si(557)
T2 - Spectroscopic evidence for dimensionality
AU - Nicholson, C. W.
AU - Monney, C.
AU - Krieg, U.
AU - Tegenkamp, Christoph
AU - Pfnür, Herbert
AU - Horn, K.
AU - Wolf, Martin
PY - 2015/9/16
Y1 - 2015/9/16
N2 - 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 .
AB - 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 .
KW - 1D confining potential
KW - dimensionality
KW - doping
KW - electronic structure
KW - vicinal Si surface
UR - http://www.scopus.com/inward/record.url?scp=84943526446&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/17/9/093025
DO - 10.1088/1367-2630/17/9/093025
M3 - Article
AN - SCOPUS:84943526446
VL - 17
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
IS - 9
M1 - 093025
ER -