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VOLUME 31 (1980) | ISSUE 6 | PAGE 356
Prospects of using nonlinear elements of the high-temperature superconductors with a A15 lattice
It is shown that the standard coherence parameter ξ0 for the V3Si, Nb3Sn and V3Ga alloys obtained from measurements of the specific heat is too low. In this work the value of ξ0 is determined on the basis of optical measurements. ξ0~ 300-500 A (instead of the generally accepted value of 50 A) was obtained for the indicated alloys. For a length of the mean free path > 500 A, the nonlinear, weak junctions based on these elements can be used effectively both at low Τ and near Tc.