Random matrix approach to `nonuniversal' conductance

Details Random matrix approach to `nonuniversal' conductance Random matrix approach to `nonuniversal' conductance

1997-12-03

arxiv.org/abs/cond-mat/9712048v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages in LaTex + 4 figures in .eps submitted to Phys. Rev. B

Scientific paper

Recent experiments on the conductance of high quality quantum wires have revealed an unexpected feature: the quantization step of the conductance is apparently system dependent. We provide the understanding of this behaviour using the appropriately extended random matrix approach. A single additional parameter governs the size of the conductance quantization steps. In effect the behaviour seems to remain `universal', generic for the conductance of a class of mesoscopic systems.

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