Phase sticking in one-dimensional Josephson junction chains
Journal article, Peer reviewed
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Original versionErgül, A., Schaeffer, D., Lindblom, M., Haviland, D. B., Lidmar, J., & Johansson, J. (2013). Phase sticking in one-dimensional Josephson junction chains. Physical Review B - Condensed Matter and Materials Physics, 88(10). doi: 10.1103/PhysRevB.88.104501 10.1103/PhysRevB.88.104501
We studied current-voltage characteristics of long one-dimensional Josephson junction chains with Josephson energy much larger than charging energy, EJ EC. In this regime, typical I-V curves of the samples consist of a supercurrent-like branch at low-bias voltages followed by a voltage-independent chain current branch, Ichain at high bias. Our experiments showed that Ichain is not only voltage-independent but it is also practically temperature-independent up to T=0.7TC. We have successfully model the transport properties in these chains using a capacitively shunted junction model with nonlinear damping.
Published version of an article in the journal: Physical Review B - Condensed Matter and Materials Physics. Also available from the publisher at: http://dx.doi.org/10.1103/PhysRevB.88.104501