Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-01-08
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 1 figures, submitted to Phys. Rev. B, using REVTEX4
Scientific paper
10.1103/PhysRevB.70.033302
We study an electron transport property in two parallel quantum wires with random potentials. Assuming the same microscopic parameters for both wires, we focus on the relationship between inter-wire interaction and electron backward scattering by random potentials at low energy regime. Our analytical and numerical calculations show that the Drude weight, a measure of the electron transport, is influenced by inter-wire interaction and random potential independently, and little coupling between those two is observed, which is in contrast to a deep relationship between up- and down-spin interactions and random potentials in a single wire. It leads to that inter-wire interactions do not have a great influence on the Anderson localization in each wire.
Mori Hiroyuki
Takeuchi Yousuke
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