Control of Coulomb blockade in a mesoscopic Josephson junction using single electron tunneling

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2004
Major/Subject
Mcode
Degree programme
Language
en
Pages
8059-8062
Series
Journal of Applied Physics, Volume 95, Issue 12
Abstract
We study a circuit where a mesoscopic Josephson junction(JJ) is embedded in an environment consisting of a large bias resistor and a normal-insulator-superconductor (NIS) junction. The effective Coulomb blockade of the JJ can be controlled by the tunneling current through the NIS junction leading to transistor-like characteristics. We show using phase correlation theory and numerical simulations that substantial current gain with low current noise (in≲1 fA/√Hz) and noise temperature (≲0.1 K) can be achieved. Good agreement between our numerical simulations and experimental results is obtained.
Description
Keywords
Josephson junctions, normal-insulator-superconductors, Coulomb blockades
Other note
Citation
Hassel, J. & Seppä, Heikki & Delahaye, Julien & Hakonen, Pertti J. 2004. Control of Coulomb blockade in a mesoscopic Josephson junction using single electron tunneling. Journal of Applied Physics. Volume 95, Issue 12. 8059-8062. ISSN 0021-8979 (printed). DOI: 10.1063/1.1751231