Abstract
One dimensional Josephson junction arrays have been fabricated andcurrent-voltage characteristics (IVC) have been measured at cryogenic temperatures. The arrays were fabricated in a SQUID-geometry which allowed an in situ tuning of the Josephson energy by application of a magnetic field. The IVC of the arrays shows a clear Coulomb blockade state. In the Coulomb blockade regime the IVC are hysteretic. The array is modeled using a serial resistive-inductive-junction model which is able to qualitatively explain the IVC. In this model an inductance of the order of 0.1–10 mH per junction is needed to account for the hysteresis. Kinetic inductance, stemming from the inertia of the Cooper pairs, gives the correct order of magnitude. The problem of self-heating is also discussed as an alternative explanation of the hysteresis.
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Ågren, P., Andersson, K. & Haviland, D.B. Kinetic Inductance and Coulomb Blockade in One Dimensional Josephson Junction Arrays. Journal of Low Temperature Physics 124, 291–304 (2001). https://doi.org/10.1023/A:1017594322332
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DOI: https://doi.org/10.1023/A:1017594322332