Negative conductance in driven Josephson junctions

Details Negative conductance in driven Josephson junctions Negative conductance in driven Josephson junctions

2008-03-19

arxiv.org/abs/0803.2776v1

Acta Physica Polonica B 39, p1115 (2008)

Physics

Condensed Matter

Superconductivity

10 pages, 4 figures, Presented at the 20th Marian Smoluchowski Symposium on Statistical Physics, Krakow, September 22-27, 2007

Scientific paper

We investigate an optimal regime of negative-valued conductance, emerging in a resistively and capacitively shunted Josephson junction, which is driven simultaneously by both, a time-periodic (ac) and a constant (dc) current. We analyze the current-voltage characteristics in the regime of absolute negative conductance. We additionally explore the stability of the negative response with respect to the ac-current frequency.

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