The electrical conductance of mesoscopic wires fluctuates as a function of control parameters such as the magnetic field or the applied bias voltage. We present new experimental results in the non-linear response regime at finite bias voltage. While earlier studies focused on the size of the fluctuation in the differential conductance, the present work takes a closer look at the critical field Bc (defined as the half width of the autocorrelation function) as well. The experimental findings cannot be explained by existing theoretical descriptions.
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Schäfer, R., vom Stein, P. & Wallisser, C. Peculiarities of Non-Equilibrium Conductance Fluctuations. J Low Temp Phys 147, 485–503 (2007). https://doi.org/10.1007/s10909-007-9319-8
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DOI: https://doi.org/10.1007/s10909-007-9319-8