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Application of single electron devices for the development of a current standard

Objective

Quality assurance and traceability of electrical measurements are of fundamental importance for Europe's measurement infrastructure. To support the industrial technological progress, it is therefore of importance that the ampere, which is a base unit of the SI system, is directly realized with great precision and reproducibility. It is believed that such a standard can be realized using single electron devices. For a successful realization of a future standard it is necessary to enhance the effectiveness of the national research activities by means of international collaboration.

The SETamp project aims for the realization of the following objectives:
(1) to realize a thorough understanding of the physical processes that affect the performance of single electron tunnelling (SET) devices;
(2) to coordinate and structure the device fabrication and testing;
(3) to develope and test high-precision electrical-current measurement techniques.
A general objective incorporated in the above mentioned objectives is to coordinate the interaction between theoretical, fabrication, and experimental research.
(1) Theory: The work on the understanding of the physical processes that determine the performance of single electron devices has started with an experts workshop organized by DFM. The workshop took place from July 24 to 26 in Lyngby (Denmark).
(2) Device fabrication and testing: The fabrication and testing of the first devices have been completed, and will be continued in the next period (PTB, NMi, CTH, SP, OFMET). There are some (inherent) setbacks due to malfunction of necessary equipment (OI). These problems have been solved satisfactorily by shifting work to other partners.
(3) Current measurement: The development cryogenic capacitors and current comparators is on schedule and some subtasks have already been completed (LCIE, NMi, NPL). One task is seriously delayed due to the malfunction of equipment in WP 3 (OI), but will still be completed in the next period (NPL).

Funding Scheme

CSC - Cost-sharing contracts
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Coordinator

NMI B.V., INSTITUTE FOR METROLOGY AND TECHNOLOGY
Address
97,Schoenmakerstraat 97
2600 AR Delft
Netherlands

Participants (8)

Bundesrepublik Deutschland
Germany
Address
100,Bundesallee 100
38116 Braunschweig
CHALMERS UNIVERSITY OF TECHNOLOGY
Sweden
Address
3,Fysikgränd 3
412 96 Goeteborg
DANISH INSTITUTE OF FUNDAMENTAL METROLOGY
Denmark
Address
1,Matematiktorvet 307
2800 Lyngby
Eidgenossisches Amt für Meßwesen
Switzerland
Address
50,Lindenweg 50
3084 Wabern
Laboratoire Central des Industries Electriques
France
Address
33 Avenue Du Général Leclerc
92260 Fontenay-aux-roses
NPL MANAGEMENT LTD.
United Kingdom
Address
Queens Road 33
TW11 0LW Teddington
Oxford Instruments plc
United Kingdom
Address
Cowley Road
CB4 4WZ Cambridge
Swedish National Testing and ResearchInstitute SP
Sweden
Address

501 15 Boräs