Frequency Windows of Absolute Negative Conductance in Josephson Junctions
arXiv:0705.2509 · doi:10.1063/1.2759719
Abstract
We report on anomalous conductance in a resistively and capacitively shunted Josephson junction which is simultaneously driven by ac and dc currents. The dependence of the voltage across the junction on the frequency of the ac current shows windows of absolute negative conductance regimes, i.e. for a positive (negative) dc current, the voltage is negative (positive).
4 pages, 1 figure