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VOLUME 54 (1991) | ISSUE 9 | PAGE 496
Critical behavior of the Josephson frequency of superconducting composites
The time-varying Josephson eifect in superconducting composites near the percolation threshold is analyzed. A new eifect is predicted: a dependence of the frequency of the Josephson emission on the concentration of the superconducting phase. A new exponent of percolation theory is introduced; a critical exponent of the concentration dependence of the Josephson frequency. This exponent is derived on the basis of a weak-link model.