Control of the electromagnetic environment for single Josephson junctions using arrays of dc SQUIDs

Authors
Watanabe, M Haviland, DB Kautz, RL
Citation
M. Watanabe et al., Control of the electromagnetic environment for single Josephson junctions using arrays of dc SQUIDs, SUPERCOND S, 14(10), 2001, pp. 870-874
Citations number
14
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
ISSN journal
09532048 → ACNP
Volume
14
Issue
10
Year of publication
2001
Pages
870 - 874
Database
ISI
SICI code
0953-2048(200110)14:10<870:COTEEF>2.0.ZU;2-Z
Abstract
We have measured the current-voltage characteristics of small-capacitance s ingle Josephson junctions at low temperatures (T less than or equal to 0.04 K), where the strength of the coupling between the single junction and the electromagnetic environment was controlled with one-dimensional arrays of dc SQUIDs. When the zero-bias resistance of the SQUID arrays is much higher than the quantum resistance h/e(2) approximate to 26 k Omega, a transition to a clear Coulomb blockade of Cooper-pair tunnelling is induced in the si ngle junction. The measured blockade voltage agrees with the theoretical pr ediction.