Cross-Over between universality classes in a magnetically disordered metallic wire

Details Cross-Over between universality classes in a magnetically disordered metallic wire Cross-Over between universality classes in a magnetically disordered metallic wire

2012-01-19

arxiv.org/abs/1201.4004v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

Final version, accepted for publication in New Journ. of Physics, 27 pages, 28 figures. Replaces the earlier shorter preprint

Scientific paper

In this article we present numerical results of conduction in a disordered quasi-1D wire in the possible presence of magnetic impurities. Our analysis leads us to the study of universal properties in different conduction regimes such as the localized and metallic ones. In particular, we analyse the cross-over between universality classes occurring when the strength of magnetic disorder is increased. For this purpose, we use a numerical Landauer approach, and derive the scattering matrix of the wire from electron's Green's function.

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