Quantum Electron Transport in Disordered Wires with Symplectic Symmetry

Details Quantum Electron Transport in Disordered Wires with Symplectic Symmetry Quantum Electron Transport in Disordered Wires with Symplectic Symmetry

2004-11-18

arxiv.org/abs/cond-mat/0411462v1

J. Phys. Soc. Jpn. 73 (2004) 1430

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages

Scientific paper

10.1143/JPSJ.73.1430

The conductance of disordered wires with symplectic symmetry is studied by the supersymmetric field theory. Special attention is focused on the case where the number of conducting channels is odd. Such a situation can be realized in metallic carbon nanotubes. The average dimensionless conductance g is obtained using Zirnbauer's super-Fourier analysis. It is shown that with increasing wire length, g approaches to 1 in the odd-channel case, while g vanishes in the ordinary even-channel case. It should be emphasized that the so-called Zirnbauer's zero mode, which has been believed to be unphysical, is essential for describing the anomalous behavior in the odd-channel case.

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