Asymptotic Expansion for the Magnetoconductance Autocorrelation Function

Details Asymptotic Expansion for the Magnetoconductance Autocorrelation Function Asymptotic Expansion for the Magnetoconductance Autocorrelation Function

1998-09-21

arxiv.org/abs/cond-mat/9809276v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

submitted to Annals of Physics (N.Y.)

Scientific paper

10.1006/aphy.1998.5889

We complement a recent calculation (P.B. Gossiaux and the present authors, Ann. Phys. (N.Y.) in press) of the autocorrelation function of the conductance versus magnetic field strength for ballistic electron transport through microstructures with the shape of a classically chaotic billiard coupled to ideal leads. The function depends on the total number M of channels and the parameter t which measures the difference in magnetic field strengths. We determine the leading terms in an asymptotic expansion for large t at fixed M, and for large M at fixed t/M. We compare our results and the ones obtained in the previous paper with the squared Lorentzian suggested by semiclassical theory.

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