| Issue |
Europhys. Lett.
Volume 71, Number 6, September 2005
|
|
|---|---|---|
| Page(s) | 966 - 972 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10172-5 | |
| Published online | 10 August 2005 | |
Effect of temperature and bias voltage on the conductance
distribution of disordered 
quantum wires
1
Institut für Theorie der Kondensierten Materie, Universität Karlsruhe Wolfgang-Gaedestr. 1, 76128 Karlsruhe, Germany
2
Max-Planck-Institut für Physik komplexer Systeme Nöthnitzer Strasse 38, 01187 Dresden, Germany
Received:
26
May
2005
Accepted:
12
July
2005
The statistical properties of the conductance of one-dimensional
disordered systems are studied at finite bias voltage V and
temperature T, in an independent-electron picture. We calculate
the complete distribution of the conductance 
in different
regimes of V, T within a statistical model of resonant
tunneling transmission. We find that changes from the
well-known log-normal distribution at 
in the linear
response regime to a Gaussian distribution at large V, T. The
dependence on T and V of average quantities such as 
, is analyzed as well. Our
analytical results are confirmed by numerical simulations. We
also discuss the limits of validity of the model and conclude that
the effects of finite T, V presented here should be
observable.
PACS: 72.10.-d – Theory of electronic transport; scattering mechanisms / 73.23.-b – Electronic transport in mesoscopic systems
© EDP Sciences, 2005
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