Nonuniversal critical behavior in the critical current of superconducting composites
1988; American Physical Society; Volume: 37; Issue: 16 Linguagem: Inglês
10.1103/physrevb.37.9292
ISSN1095-3795
AutoresM. Octavio, A. Octavio, J. Aponte, Rubén Vázquez‐Medina, C. J. Lobb,
Tópico(s)Advanced Condensed Matter Physics
ResumoWe report the results of numerical simulations of two-dimensional percolative networks of superconductors. Near the percolation threshold ${p}_{c}$, the critical current density ${J}_{c}$ of these networks varies as (p-${p}_{c}$${)}^{v}$, where p is the fraction of superconducting material present. The exponent v is found to be dependent on the microstructure of the network. Excellent agreement is obtained between our numerical values of v and predictions for v based on the nodes-links-blobs-necks model.
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