Details
| Original language | English |
|---|---|
| Article number | 085426 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 92 |
| Issue number | 8 |
| Publication status | Published - 25 Aug 2015 |
Abstract
The In/Si(111) system reveals an anisotropy in the electrical conductivity and is a prototype system for atomic wires on surfaces. We use this system to study and tune the interwire interaction by adsorption of oxygen. Through rotational square four-tip transport measurements, both the parallel (σ||) and perpendicular (σ) components are measured separately. The analysis of the I(V) curves reveals that σ is also affected by adsorption of oxygen, showing clearly an effective interwire coupling, in agreement with density-functional-theory-based calculations of the transmittance. In addition to these surface-state mediated transport channels, we confirm the existence of conducting parasitic space-charge layer channels and address the importance of substrate steps by performing the transport measurements of In phases grown on Si(111) mesa structures.
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 - Condensed Matter and Materials Physics, Vol. 92, No. 8, 085426, 25.08.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Interwire coupling for In(4×1) /Si(111) probed by surface transport
AU - Edler, Frederik
AU - Miccoli, Ilio
AU - Demuth, S.
AU - Pfnür, Herbert
AU - Wippermann, Stefan Martin
AU - Lücke, Andreas
AU - Schmidt, Wolf Gero
AU - Tegenkamp, Christoph
PY - 2015/8/25
Y1 - 2015/8/25
N2 - The In/Si(111) system reveals an anisotropy in the electrical conductivity and is a prototype system for atomic wires on surfaces. We use this system to study and tune the interwire interaction by adsorption of oxygen. Through rotational square four-tip transport measurements, both the parallel (σ||) and perpendicular (σ) components are measured separately. The analysis of the I(V) curves reveals that σ is also affected by adsorption of oxygen, showing clearly an effective interwire coupling, in agreement with density-functional-theory-based calculations of the transmittance. In addition to these surface-state mediated transport channels, we confirm the existence of conducting parasitic space-charge layer channels and address the importance of substrate steps by performing the transport measurements of In phases grown on Si(111) mesa structures.
AB - The In/Si(111) system reveals an anisotropy in the electrical conductivity and is a prototype system for atomic wires on surfaces. We use this system to study and tune the interwire interaction by adsorption of oxygen. Through rotational square four-tip transport measurements, both the parallel (σ||) and perpendicular (σ) components are measured separately. The analysis of the I(V) curves reveals that σ is also affected by adsorption of oxygen, showing clearly an effective interwire coupling, in agreement with density-functional-theory-based calculations of the transmittance. In addition to these surface-state mediated transport channels, we confirm the existence of conducting parasitic space-charge layer channels and address the importance of substrate steps by performing the transport measurements of In phases grown on Si(111) mesa structures.
UR - http://www.scopus.com/inward/record.url?scp=84941089104&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.92.085426
DO - 10.1103/PhysRevB.92.085426
M3 - Article
AN - SCOPUS:84941089104
VL - 92
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 8
M1 - 085426
ER -