Mesoscopic Fluctuations of Elastic Cotunneling

Details Mesoscopic Fluctuations of Elastic Cotunneling Mesoscopic Fluctuations of Elastic Cotunneling

1996-05-06

arxiv.org/abs/cond-mat/9605029v1

Physics

Condensed Matter

4 pages, 1.eps figure

Scientific paper

10.1103/PhysRevLett.77.2057

We study mesoscopic fluctuations of the conductance through a quantum dot at the wings of the Coulomb blokade peaks. At low temperatures, the main mechanism of conduction is the elastic cotunneling. The conductance strongly fluctuates with an applied magnetic field. The magnetic correlation field is shown to be controlled by the charging energy, and the correlation function has a universal form. The distribution function for the conductance obtained analytically shows a non-trivial crossover between the orthogonal and unitary ensembles.

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