Fluctuation relations without micro-reversibility for two-terminal conductors

Details Fluctuation relations without micro-reversibility for two-terminal conductors Fluctuation relations without micro-reversibility for two-terminal conductors

2009-03-09

arxiv.org/abs/0903.1431v2

AIP Conference Proceedings 1129, 20th International Conference on Noise and Fluctuations, M. Macucci and G. Basso, eds. (Melvi

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 2 figures, corrected typos

Scientific paper

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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