Interaction effects in multi-subband quantum wires

Details Interaction effects in multi-subband quantum wires Interaction effects in multi-subband quantum wires

1996-10-30

arxiv.org/abs/cond-mat/9610211v1

J. Phys. Soc. Jap. (Letter) 65, p. 3712 (1996)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, style-files included. No figure. Appears in J. Phys. Soc. Japan (Letter)

Scientific paper

10.1143/JPSJ.65.3712

We investigate the effect of electron-electron interactions on the transport properties of disordered quasi one-dimensional quantum wires with two or more subbands occupied. We apply two alternative methods to solve the logarithmic divergent problem, namely the parquet graph theory and a renormalization group calculation. We solve the group equations analytically in the weak coupling limit and find a power-law for the temperature dependent conductivity of a multi-channel system. The exponent is roughly equal to the inverse of the number of the occupied subbands.

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