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Control of the Electromagnetic Environment for Single Josphson Junctions using Arrays of dc SQUIDs

Published

Author(s)

M. Tan, D. B. Haviland, Richard L. Kautz

Abstract

We have measured the current-voltage characteristics of small-capacitance single 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/e2 approximately equal to 26 kO, a transition to a clear Coulomb blockade of Cooper-pair tunneling is induced in the single junction. The measured blockade voltage agrees with the theoretical prediction.
Citation
Superconductor Science & Technology
Volume
14

Keywords

Cooper-pair tunneling, Coulomb blockade, Josephson juntion, SQUID, superconductivity

Citation

Tan, M. , Haviland, D. and Kautz, R. (2001), Control of the Electromagnetic Environment for Single Josphson Junctions using Arrays of dc SQUIDs, Superconductor Science & Technology (Accessed April 14, 2024)
Created September 23, 2001, Updated October 12, 2021