Suppression of the critical current of a balanced SQUID
Mesoscale and Nanoscale Physics
2008-03-11 v1 Superconductivity
Abstract
We present an experimental study of the magnetic flux dependence of the critical current of a balanced SQUID with three Josephson junctions in parallel. Unlike for ordinary dc SQUIDs, the suppression of the critical current does not depend on the exact parameters of the Josephson junctions. The suppression is essentially limited only by the inductances of the SQUID loops. We demonstrate a critical current suppression ratio of higher than 300 in a balanced SQUID with a maximum critical current 30 nA.
Keywords
Cite
@article{arxiv.0712.0063,
title = {Suppression of the critical current of a balanced SQUID},
author = {Antti Kemppinen and Antti J. Manninen and Mikko Möttönen and Juha J. Vartiainen and Joonas T. Peltonen and Jukka P. Pekola},
journal= {arXiv preprint arXiv:0712.0063},
year = {2008}
}
Comments
4 pages, 3 figures