Physics – Condensed Matter – Superconductivity
Scientific paper
1997-05-20
Phys. Rev. B 56 (1997) 5564
Physics
Condensed Matter
Superconductivity
10 pages, with eps figures. To appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.56.5564
We study the dynamics of current-biased Josephson-junction arrays with a magnetic penetration depth smaller than the lattice spacing. We compare the dynamics imaged by low-temperature scanning electron microscopy to the vortex dynamics obtained from model calculations based on the resistively-shunted junction model, in combination with Maxwell's equations. We find three bias current regions with fundamentally different array dynamics. The first region is the subcritical region, i.e. below the array critical current I_c. The second, for currents I above I_c, is a "vortex region", in which the response is determined by the vortex degrees of freedom. In this region, the dynamics is characterized by spatial domains where vortices and antivortices move across the array in opposite directions in adjacent rows and by transverse voltage fluctuations. In the third, for still higher currents, the dynamics is dominated by coherent-phase motion, and the current-voltage characteristics are linear.
Doderer T.
Hagenaars T. J.
Huebener R. P.
José Jorge V.
Lachenmann S. G.
No associations
LandOfFree
Current-induced vortex dynamics in Josephson-junction arrays: Imaging experiments and model simulations 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 Current-induced vortex dynamics in Josephson-junction arrays: Imaging experiments and model simulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current-induced vortex dynamics in Josephson-junction arrays: Imaging experiments and model simulations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-530368