Magnetoasymmetric current fluctuations of single-electron tunneling

Details Magnetoasymmetric current fluctuations of single-electron tunneling Magnetoasymmetric current fluctuations of single-electron tunneling

2008-05-06

arxiv.org/abs/0805.0788v3

Phys. Rev. B 79, 045305 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures; published version

Scientific paper

10.1103/PhysRevB.79.045305

We determine the shot noise asymmetry of a quantum dot under reversal of an external magnetic field. The dot is coupled to edge states which invert their chirality when the field is reversed, leading to a magnetoasymmetric electrochemical potential in the nanostructure. Surprisingly, we find an exact relation between the magnetoasymmetries corresponding to the nonlinear conductance and the shot noise to leading order in the applied bias, implying a higher-order fluctuation-dissipation relationship. Our calculations also show a magnetoasymmetry of the full probability distribution of the transferred charge.

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