Title :
Part-per-million current accuracy in the tunable-barrier electron pump
Author :
Giblin, S.P. ; Kataoka, M. ; Fletcher, J.D. ; See, P. ; Janssen, T.J.B.M. ; Williams, J.M. ; Griffiths, Jonathan P. ; Jones, Geb A. C. ; Farrer, I. ; Ritchie, D.A.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
We demonstrate that the accuracy of the current quantisation in a semiconductor tunable-barrier pump is better than 1.1×10-6 at a current of 150 pA. We measure the pump current against a reference current traceable to the Josephson and quantum Hall effects. The measurement technique is described in detail, and routes for further development discussed.
Keywords :
Hall effect devices; Josephson effect; electric current measurement; semiconductor device measurement; single electron devices; Josephson effects; current quantisation; measurement technique; part-per-million current accuracy; pump current measurement; quantum Hall effects; semiconductor tunable-barrier pump; tunable-barrier electron pump; Indexes; Logic gates; Measurement; current measurement; measurement standards; nanoelectronics; precision measurement; single electron devices;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6251127
