Physics – Condensed Matter – Superconductivity
Scientific paper
2012-03-28
Physics
Condensed Matter
Superconductivity
14 pages, 6 figures
Scientific paper
We investigate the phase dynamics of a long Josephson junction (LJJ) with two-gap superconductors. In this junction, two channels for tunneling between the adjacent superconductor (S) layers as well as one interband channel within each S layer are available for a Cooper pair. Due to the interplay between the conventional and interband Josephson effects, the LJJ can exhibit unusual phase dynamics. Accounting for excitation of a stable 2$\pi$-phase texture arising from the interband Josephson effect, we find that the critical current between the S layers may become both spatially and temporally modulated. The spatial critical current modulation behaves as either a potential well or barrier, depending on the symmetry of superconducting order parameter, and modifies the Josephson vortex trajectories. We find that these changes in phase dynamics result in emission of electromagnetic waves as the Josephson vortex passes through the region of the 2$\pi$-phase texture. We discuss the effects of this radiation emission on the current-voltage characteristics of the junction.
Ghimire Bal-Ram
Kim Ju H.
Tsai Hao-Yu
No associations
LandOfFree
Fluxon Dynamics of a Long Josephson Junction with Two-gap Superconductors does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Fluxon Dynamics of a Long Josephson Junction with Two-gap Superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluxon Dynamics of a Long Josephson Junction with Two-gap Superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-56879