Towards a cryogen-free table-top primary resistance standard
Paper i proceeding, 2016
We demonstrate quantum Hall resistance measurements with metrological accuracy in a small cryogen-free system operating at a temperature of around 3.8 K and magnetic fields below 5 T. We use this system to investigate the optimisation of graphene/SiC devices for maximum breakdown current. In addition we report the first characterisation of a cryogen-free cryogenic current comparator which enables entirely cryogen-free primary resistance metrology.
primary resistance metrology
quantum Hall effect
cryogenic current comparators
graphene
Författare
Tjbm Janssen
S. Rozhko
J. M. Williams
J. Ireland
S. P. Giblin
Hans He
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Samuel Lara Avila
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Sergey Kubatkin
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
R. Yakimova
A.Y. Tzalenchuk
2016 Conference on Precision Electromagnetic Measurements (Cpem 2016)
978-1-4673-9134-4 (ISBN)
Ämneskategorier
Elektroteknik och elektronik
DOI
10.1109/CPEM.2016.7540654
ISBN
978-1-4673-9134-4