Electron Counting Capacitance Standard with an improved five-junction R-pump

Details Electron Counting Capacitance Standard with an improved five-junction R-pump Electron Counting Capacitance Standard with an improved five-junction R-pump

2011-07-08

arxiv.org/abs/1107.1616v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages, 9 figures, 1 table

Scientific paper

The Electron Counting Capacitance Standard currently pursued at PTB aims to close the Quantum Metrological Triangle with a final precision of a few parts in 10^7. This paper reports the considerable progress recently achieved with a new generation of single-electron tunnelling devices. A five-junction R-pump was operated with a relative charge transfer error of five electrons in 10^7, and was used to successfully perform single-electron charging of a cryogenic capacitor. The preliminary result for the single-electron charge quantum has an uncertainty of less than two parts in 10^6 and is consistent with the value of the elementary charge.

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