1,720,970 research outputs found
Preparation and read-out of a Josephson vortex in a double-well potential
No full textWe report on the escape of a Josephson vortex from a magnetic-field induced double-well potential. A characterization in the thermal (or classic) regime is presented here, with attention to the preparation and readout of the vortex state
SWITCHING PHENOMENA AND PULSED OPERATION IN LONG JOSEPHSON DEVICES
No full textRecent findings by G.Pepe et al. (Appl.Phys.Lett.89, 2770, 2001) have given new insights over the dynamics of Josephson junctions subject to electronic pulse injection. These experiments can be considered important steps toward the study of non-equilibrium effects involved in junctions under very fast (e.g. laser induced) pumping signals. In the governing equations (sine-Gordon or coupled sine-Gordon depending on the system) pulse operation enters via Josephson current distribution or via bias current distribution. By means of numerical simulations here we study the dependence of the switching to resistive state on fast local depression of Josephson current. Next, using simulated electronic pulse train we show how the flip-flop operating mode found in G.Pepe et al. is a common feature of single or stacked Josephson systems without regard for the pulse waveform or the presence of the gap structure in the I-V characteristics. The effect of the length and of the magnetic field is also discussed
JOSEPHSON NONEQUILIBRIUM PHENOMENA UNDER CURRENT INJECTION IN SUPERCONDUCTING TREE-TERMINAL STACKED DEVICE
No full textThe characteristic electron-phonon coupling time of unconventional superconductors and implications for optical detectors
No full text
- …
