Vortex dissipation in Y1−xPrxBa2Cu3O7−δ superconductors above and below the zero-field critical temperature
T. Katuwal, V. Sandu, C. C. Almasan, B. J. Taylor, M. B. Maple
DOI 10.1103/PhysRevB.72.174501 · Physical Review B
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Abstract
We investigated in-plane angular magnetoresistivity Δρab∕ρab(0°) below and above the zero-field critical temperature Tc0 of Y1−xPrxBa2Cu3O7−δ single crystals with 0.0⩽x⩽0.53. The angular dependence of in-plane magnetoresistivity shows three temperature regimes: (a) a low T regime which extends from below to above the critical temperature Tc0, up to an x-dependent temperature (e.g., up to 1.15×Tc0 for x=0.46), displaying a two-dimensional (2D) scaling (consistent with pancakelike excitation), (b) an intermediate T regime, corresponding to vortex line excitations, which extends up to Tφ>Tc0, and (c) a high T regime in which the quasiparticles dominate the dissipation. The constructed electronic phase diagram shows that Tφ(x) departs from Tc0(x) for x⩾0.20 and reaches a maximum at x=0.46.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | midpoint |
| Y1-xPrxBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13 | Pressure not reported | midpoint |
| Y0.54Pr0.46Ba2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38 | Pressure not reported | midpoint |
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