Weak-Localization and Integrability in Ballistic Cavities

Details Weak-Localization and Integrability in Ballistic Cavities Weak-Localization and Integrability in Ballistic Cavities

1992-12-02

arxiv.org/abs/cond-mat/9212002v1

Phys.Rev.Lett.70:3876-3879,1993

Physics

Condensed Matter

12 pages + 3 figures, revtex, hub-92-wl

Scientific paper

10.1103/PhysRevLett.70.3876

We demonstrate the existence of an interference contribution to the average magnetoconductance, G(B), of ballistic cavities and use it to test the semiclassical theory of quantum billiards. G(B) is qualitatively different for chaotic and regular cavities, an effect explained semiclassically by the differing classical distribution of areas. The magnitude of G(B) is poorly explained by the semiclassical theory of coherent backscattering (elastic enhancement factor)-- correlations beyond time-reversed pairs of trajectories must be included-- but is in agreement with random matrix theory.

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