Physics – Condensed Matter
Scientific paper
1993-06-30
Physics
Condensed Matter
17 pages in REVTEX 3.0, 6 figures in LaTeX available upon request, KA-TFP-93-1
Scientific paper
10.1016/0921-4526(94)90906-7
The properties of vortices in Josephson junction arrays are investigated in the quantum regime near the superconductor-insulator transition. We derive and study an effective action for vortex dynamics that is valid in the region where the charging energy is comparable to the Josephson coupling energy. In the superconducting phase the onset of quantum effects reduces the vortex mass and depinning current. In the case of long range Coulomb interaction between Cooper pairs we find that as the transition is approached, the velocity window in which ballistic vortex motion is possible grows. At the superconductor-insulator transition the vortex mass vanishes and vortices and spinwaves decouple. In the case of on-site Coulomb repulsion (which is of relevance for superconducting granular films) the vortex mass it is sample-size dependent in the superconducting phase, but stays finite at the critical point where it is scale invariant. The relation of our work to experiment is discussed.
Fazio Rosario
Otterlo Anne van
No associations
LandOfFree
Quantum Vortices Near the Superconductor-Insulator Transition in Josephson Junction Arrays 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 Quantum Vortices Near the Superconductor-Insulator Transition in Josephson Junction Arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Vortices Near the Superconductor-Insulator Transition in Josephson Junction Arrays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-345805