Phys. Rev. Lett. 70, 3876–3879 (1993)Weak localization and integrability in ballistic cavitiesReceived 19 November 1992; published in the issue dated 21 June 1993 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 (saturation versus linear increase) which is 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); interference between trajectories which are not exactly time reversed must be included. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.70.3876
DOI:
10.1103/PhysRevLett.70.3876
PACS:
05.45.+b, 03.65.Sq, 72.20.My, 73.20.Fz
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