| Issue |
Europhys. Lett.
Volume 55, Number 1, July 2001
|
|
|---|---|---|
| Page(s) | 80 - 85 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00384-1 | |
| Published online | 01 December 2003 | |
Quantized conductance and intersubband scattering in serially connected quantum wires
1
Department of Physics, Swiss Federal Institute of
Technology (EPFL) CH-1015 Lausanne, Switzerland
2
Department of Physics, Tel-Aviv University -
Ramat-Aviv, Israel
Received:
15
January
2001
Accepted:
27
April
2001
We studied the conductance of quantum wires (QWRs) with rigid
confinement potential in different configurations, including
single QWRs, QWRs with restricted access to the 2D reservoirs,
and serially connected QWRs. We explain the deviations of
quantized conductance values from 
as coming from the lack
of 1D/2D coupling. The role of intersubband
scattering in establishing contact between the QWR and 2D
reservoirs is demonstrated. The achievement of conductance step
values close to in these wires depends on establishing
strong intersubband scattering without significant backscattering.
PACS: 73.23.Ad – Ballistic transport / 73.40.Cg – Contact resistance, contact potential / 73.63.Nm – Quantum wires
© EDP Sciences, 2001
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