Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1999-07-06
J. Phys.: Condens. Matter, v. 11 (1999), L437-L443
Physics
Condensed Matter
Disordered Systems and Neural Networks
5 pages, LaTeX 2.09, improved version
Scientific paper
10.1088/0953-8984/11/40/103
The method is proposed adapted for calculating the T=0 conductance of arbitrarily stretched disordered conducting strips in terms of the Kubo theory. The 2D scattering problem is solved through exact one-dimensionalization in mode representation (instead of quasiclassical) that enables to allow reasonably for quantum interference of scattered waves as well as for the effect of dephasing. The inter- and intra-mode scattering channels are shown to play quite different role, the former being responsible for diffusive smearing of the quantum levels whereas the latter for the interference effects. No pronounced localization should reveal itself in wires with more then one conducting mode, irrespective of their length, contrary to anticipations of the scaling theory.
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