Details
| Original language | English |
|---|---|
| Article number | 125409 |
| Journal | Physical Review B |
| Volume | 95 |
| Issue number | 12 |
| Publication status | Published - 7 Mar 2017 |
Abstract
Adsorption of Au on vicinal Si(111) surfaces results in growth of long-range ordered metallic quantum wires. In this paper, we utilized site-specific and selective adsorption of oxygen to modify chemically the transport via different channels in the systems Si(553)-Au and Si(557)-Au. They were analyzed by electron diffraction and four-tip STM-based transport experiments. Modeling of the adsorption process by density functional theory shows that the adatoms and rest atoms on Si(557)-Au provide energetically favored adsorption sites, which predominantly alter the transport along the wire direction. Since this structural motif is missing on Si(553)-Au, the transport channels remain almost unaffected by oxidation.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 95, No. 12, 125409, 07.03.2017.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Tuning the conductivity along atomic chains by selective chemisorption
AU - Edler, Frederik
AU - Miccoli, Ilio
AU - Stöckmann, J. P.
AU - Pfnür, Herbert
AU - Braun, Christian
AU - Neufeld, S.
AU - Sanna, Simone
AU - Schmidt, Wolf Gero
AU - Tegenkamp, Christoph
N1 - Funding information: Financial support by the Deutsche Forschungsgemeinschaft (DFG) through the Research Unit FOR1700 (projects E4 and T1) is gratefully acknowledged.
PY - 2017/3/7
Y1 - 2017/3/7
N2 - Adsorption of Au on vicinal Si(111) surfaces results in growth of long-range ordered metallic quantum wires. In this paper, we utilized site-specific and selective adsorption of oxygen to modify chemically the transport via different channels in the systems Si(553)-Au and Si(557)-Au. They were analyzed by electron diffraction and four-tip STM-based transport experiments. Modeling of the adsorption process by density functional theory shows that the adatoms and rest atoms on Si(557)-Au provide energetically favored adsorption sites, which predominantly alter the transport along the wire direction. Since this structural motif is missing on Si(553)-Au, the transport channels remain almost unaffected by oxidation.
AB - Adsorption of Au on vicinal Si(111) surfaces results in growth of long-range ordered metallic quantum wires. In this paper, we utilized site-specific and selective adsorption of oxygen to modify chemically the transport via different channels in the systems Si(553)-Au and Si(557)-Au. They were analyzed by electron diffraction and four-tip STM-based transport experiments. Modeling of the adsorption process by density functional theory shows that the adatoms and rest atoms on Si(557)-Au provide energetically favored adsorption sites, which predominantly alter the transport along the wire direction. Since this structural motif is missing on Si(553)-Au, the transport channels remain almost unaffected by oxidation.
UR - http://www.scopus.com/inward/record.url?scp=85014821518&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.95.125409
DO - 10.1103/PhysRevB.95.125409
M3 - Article
AN - SCOPUS:85014821518
VL - 95
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 12
M1 - 125409
ER -