Ballistic Localization in Quasi-1D Waveguides with Rough Surfaces

Details Ballistic Localization in Quasi-1D Waveguides with Rough Surfaces Ballistic Localization in Quasi-1D Waveguides with Rough Surfaces

2003-06-03

arxiv.org/abs/cond-mat/0306049v1

Phys. Rev. E 68, 066201 (2003).

Physics

Condensed Matter

Disordered Systems and Neural Networks

5 pages, 4 figures

Scientific paper

10.1103/PhysRevE.68.066201

Structure of eigenstates in a periodic quasi-1D waveguide with a rough surface is studied both analytically and numerically. We have found a large number of "regular" eigenstates for any high energy. They result in a very slow convergence to the classical limit in which the eigenstates are expected to be completely ergodic. As a consequence, localization properties of eigenstates originated from unperturbed transverse channels with low indexes, are strongly localized (delocalized) in the momentum (coordinate) representation. These eigenstates were found to have a quite unexpeted form that manifests a kind of "repulsion" from the rough surface. Our results indicate that standard statistical approaches for ballistic localization in such waveguides seem to be unappropriate.

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