Peak effect due to Josephson vortices in superconducting Pr0.88LaCe0.12CuO4−δ single crystals
Yue Wang, Cong Ren, Lei Shan, Shiliang Li, Pengcheng Dai, Hai-Hu Wen
DOI 10.1103/PhysRevB.75.134505 · Physical Review B
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Abstract
We have measured ac magnetic susceptibility (χ=χ′+iχ″) of the electron-doped superconducting Pr0.88LaCe0.12CuO4−δ with applied magnetic field (H) either parallel or perpendicular to the CuO2 plane (H‖ab-plane or H‖c-axis). For H‖ab-plane, a peak in the temperature dependence of the screening current is revealed as a dip in the real part of the ac susceptibility χ. The temperature at which this peak anomaly occurs decreases with increasing field and lies well below the irreversibility line in the H−T phase diagram. This peak effect may arise from the phase transition of Josephson vortices from a quasiordered vortex lattice to a disordered glass phase.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pr0.88LaCe0.12CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23.5 | Pressure not reported | onset |
| Pr0.88LaCe0.12CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23.8 | Pressure not reported | onset |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O6.55 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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