Issue |
Europhys. Lett.
Volume 67, Number 2, July 2004
|
|
---|---|---|
Page(s) | 254 - 260 | |
Section | Interdisciplinary physics and related areas of science and technology | |
DOI | https://doi.org/10.1209/epl/i2004-10054-4 | |
Published online | 01 July 2004 |
Localization lengths of ultrathin disordered gold and silver nanowires
1
Departamento de Ciências Exatas, Universidade Federal de Lavras 37200-000 Lavras, MG, Brazil
2
Instituto de Física, Universidade Federal Fluminense - 24210-340 Niterói, RJ, Brazil
3
Department of Physics and Astronomy, University of California Irvine, CA, 92697 USA
Corresponding author: antc@stout.ufla.br
Received:
27
January
2004
Accepted:
4
May
2004
The localization lengths of ultrathin disordered and
nanowires are estimated by calculating the wire
conductances as functions of wire lengths. We study
and
monoatomic linear chains, and thicker
wires
with very small cross-sections. For the monoatomic chains we
consider two types of disorder: bounded random fluctuations of
the interatomic distances, and the presence of random
substitutional impurities. The effect of impurity atoms on the
nanowire conductance is much stronger. Our results show that
electrical transport in ultrathin disordered wires may occur in
the strong localization regime, and with relatively small amounts
of disorder the localization lengths can be very small. The
localization length dependence on wire thickness is investigated
for
nanowires with different impurity concentrations.
PACS: 73.20.Fz – Weak or Anderson localization / 73.21.Hb – Quantum wires
© EDP Sciences, 2004
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