Semiclassical theory in Andreev billiards: beyond the diagonal approximation

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dc.creatorZaitsev, Oleg
dc.date2006-07-05
dc.date.accessioned2026-07-07T07:15:51Z
dc.date.available2026-07-07T07:15:51Z
dc.descriptionRecently semiclassical approximations have been successfully applied to study the effect of a superconducting lead on the density of states and conductance in ballistic billiards. However, the summation over classical trajectories involved in such theories was carried out using the intuitive picture of Andreev reflection rather than the semiclassical reasoning. We propose a method to calculate the semiclassical sums which allows us to go beyond the diagonal approximation in these problems. In particular, we address the question of whether the off-diagonal corrections could explain the gap in the density of states of a chaotic Andreev billiard.
dc.description11 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0607128
dc.identifierhttp://arxiv.org/abs/cond-mat/0607128
dc.identifierJ. Phys. A: Math. Gen. 39, L467 (2006)
dc.identifierdoi:10.1088/0305-4470/39/29/L03
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/113371
dc.subjectMesoscale and Nanoscale Physics
dc.subjectChaotic Dynamics
dc.titleSemiclassical theory in Andreev billiards: beyond the diagonal approximation
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