Title :
Measurements of single electron transistor devices combined with a CCC: progress report
Author :
De Wilde, Yannick ; Gay, Frédéric ; Piquemal, François P M ; Genevès, Gérard
Author_Institution :
Lab. Central des Ind. Electr., Bur. Nat. de Metrol., Fontenay-aux-Roses, France
fDate :
4/1/2001 12:00:00 AM
Abstract :
The BNM-LCIE is developing a current standard based on single electron transistor (SET) pumps. This paper gives an overview of the experimental set-up. It includes the circuit details, in particular the combination of miniature filters and homemade lines giving high attenuation in a wide frequency band, and a cryogenic current comparator (CCC) with winding ratio of 10000:1 for high accuracy amplification of the current. The results of the testing of the circuit and CCC are presented, together with the first measurements of the current through a SET carried out by means of a CCC. Coulomb blockade oscillations with an amplitude less than 200 fA have been observed with a signal to noise ratio approaching 100 and at bias voltages as small as a 100 nV
Keywords :
Coulomb blockade; current comparators; electric current measurement; measurement standards; single electron transistors; 100 nV; 200 fA; Coulomb blockade oscillations; SET pumps; cryogenic current comparator; high accuracy current amplification; high attenuation; microwave filters; miniature filters; quantum current standard; single electron transistor devices; wide frequency band; winding ratio; Attenuation; Circuit testing; Cryogenics; Current measurement; Filters; Frequency; Signal to noise ratio; Single electron transistors; Standards development; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
