Electron transport in parallel quantum wires with random potentials

Details Electron transport in parallel quantum wires with random potentials Electron transport in parallel quantum wires with random potentials

2004-01-08

arxiv.org/abs/cond-mat/0401116v1

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.

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