Impedance of the single electron transistor at radio-frequencies

Details Impedance of the single electron transistor at radio-frequencies Impedance of the single electron transistor at radio-frequencies

2011-08-17

arxiv.org/abs/1108.3463v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Accepted by New Journal of Physics

Scientific paper

We experimentally characterise the impedance of a single electron transistor (SET) at an excitation frequency comparable to the electron tunnel rate. Differently from usual rf-SET operations, the excitation signal is applied to the gate of the device. At zero source-drain bias the single electron transistor displays both resistive (Sisyphus resistance) and reactive (tunnelling capacitance) components to its impedance. We study the bias dependence of the complex impedance, investigating its response as the electron tunnel rate becomes large with respect to the driving frequency. The experimental data are compared to values calculated from a master equation model.

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