Measuring electron energy distribution by current fluctuations
Abstract
A recent concept of local noise sensor is extended to measure the energy resolved electronic energy distribution f() at a given location inside a non-equilibrium normal metal interconnect. A quantitative analysis of f() is complicated because of a nonlinear differential resistance of the noise sensor, represented by a diffusive InAs nanowire. Nevertheless, by comparing the non-equilibrium results with reference equilibrium measurements, we conclude that f() is indistinguishable from the Fermi distribution.
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