Charge spectrometry with a strongly coupled superconducting single-electron transistor

Details Charge spectrometry with a strongly coupled superconducting single-electron transistor Charge spectrometry with a strongly coupled superconducting single-electron transistor

2001-05-14

arxiv.org/abs/cond-mat/0105263v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 figures, submitted to PRB

Scientific paper

10.1103/PhysRevB.64.245116

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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