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APS » Journals » Phys. Rev. Lett. » Volume 93 » Issue 19
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Phys. Rev. Lett. 93, 197002 (2004) [4 pages]

Observation of Shot-Noise-Induced Asymmetry in the Coulomb Blockaded Josephson Junction

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R. K. Lindell1, J. Delahaye1,2, M. A. Sillanpää1, T. T. Heikkilä1, E. B. Sonin1,3, and P. J. Hakonen1
1Low Temperature Laboratory, Helsinki University of Technology, P. O. Box 2200, FIN-02015 HUT, Finland
2LEPES-CNRS, BP 166, 38042 Grenoble Cedex 9, France
3The Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel

Received 24 March 2004; published 4 November 2004

We have investigated the influence of shot noise on the IV curves of a single mesoscopic Josephson junction. We observe a linear enhancement of zero-bias conductance of the Josephson junction with increasing shot-noise power. Moreover, the IV curves become increasingly asymmetric. Our analysis on the asymmetry shows that the Coulomb blockade of Cooper pairs is strongly influenced by the non-Gaussian character of the shot noise.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.197002
DOI:
10.1103/PhysRevLett.93.197002
PACS:
74.50.+r, 72.70.+m, 73.23.Hk
 
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