Percolation model for the superconductor-insulator transition in granular films

Details Percolation model for the superconductor-insulator transition in granular films Percolation model for the superconductor-insulator transition in granular films

2007-01-14

arxiv.org/abs/cond-mat/0701305v1

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.76.224528

We study the temperature dependence of the superconductor-insulator transition in granular superconductors. Empirically, these systems are characterized by very broad resistance tails, which depend exponentially on the temperature, and the normal state resistance. We model these systems by a two-dimensional random resistor percolation networks in which the resistance between two grains is governed either by Josephson junction coupling or by quasi particle tunneling. Our numerical simulations as well as an effective medium evaluation explain the experimental results over a wide range of temperatures and resistances. Using effective medium approximation we find an analytical expression for the effective resistance of the system and the value of the critical resistance separating conducting from insulating branches.

Affiliated with

Also associated with

No associations

Rating

Percolation model for the superconductor-insulator transition in granular films 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 Percolation model for the superconductor-insulator transition in granular films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Percolation model for the superconductor-insulator transition in granular films will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-122048