Percolative vortex motion in high-temperature superconductors
Michael Ziese
DOI 10.1103/PhysRevB.53.12422 · Physical Review B
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Abstract
A model for percolative vortex motion in inhomogeneous superconductors is introduced. Near the percolation threshold the linear, frequency-dependent electronic conductivity is found to obey scaling laws. The percolation model for vortex motion provides an alternative explanation to the experimental finding of scaling in the electronic conductivity that is conventionally attributed to a vortex glass transition. The critical exponents derived from simulations of bond percolation on three-dimensional lattices are in satisfying agreement with critical exponents obtained from the scaling analysis of the conductivity of YBa2Cu3O7−δ twinned single crystals and ceramics. The electronic conductivity is calculated in an effective medium approximation and is compared to experimental data. © 1996 The American Physical Society.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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