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Charge spectrometry with a strongly coupled superconducting single-electron transistor

C. P. Heij·P. Hadley·J. E. Mooij
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Abstract

We have used a superconducting single-electron transistor as a DC-electrometer that is strongly coupled to the metal island of another transistor. With this set-up, it is possible to directly measure the charge distribution on this island. The strong capacitive coupling was achieved by a multilayer fabrication technique that allowed us to make the coupling capacitance bigger than the junction capacitances. Simulations of this system were done using orthodox theory of single-electron tunnelling and showed excellent agreement with the measurements.

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C. P. Heij, P. Hadley, J. E. Mooij. 2001-05-14. Charge spectrometry with a strongly coupled superconducting single-electron transistor. https://doi.org/10.1103/physrevb.64.245116

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