Fluctuation relations without micro-reversibility for two-terminal conductors

Heidi Forster; Markus Buttiker

doi:10.1063/1.3140495

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arXiv · 0903.1431

Fluctuation relations without micro-reversibility for two-terminal conductors

Heidi Forster·Markus Buttiker

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Abstract

In linear transport, the fluctuation-dissipation theorem relates equilibrium current correlations to the linear conductance coefficient. Theory and experiment have shown that in small electrical conductors the non-linear I-V-characteristic of two-terminal conductor exhibits terms which are asymmetric in magnetic field and thus micro-reversibility is manifestly broken. We discuss a non-equilibrium fluctuation dissipation theorem which is not based on micro-reversibility. It connects the antisymmetric nonlinear conductance with the third cumulant of equilibrium current fluctuations and a noise term that is proportional to temperature, magnetic field and voltage.

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Heidi Forster, Markus Buttiker. 2009-07-20. Fluctuation relations without micro-reversibility for two-terminal conductors. https://doi.org/10.1063/1.3140495

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