Double-peak superconducting transition in granular L-M-Cu-O(L=Pr,Nd,Sm,Eu,D; M=Ce,Th) superconductors
A. Gerber, T. Grenet, M. Cyrot, J. Beille
DOI 10.1103/PhysRevLett.65.3201 · Physical Review Letters
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Abstract
An unusual form of superconducting transition has been observed in some of the superconducting compounds L2−xMxCuO4−y (L=Pr,Nd,Sm,Eu; M=Ce,Th) under low magnetic fields. When the temperature is reduced below the critical one, the sample’s resistance first increases, then drops to a nonzero value, increases again, and finally decreases at low temperature, creating a characteristic double-peak transition. The behavior is explained in terms of intra- and intergranular superconducting transitions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sm1.85Ce0.15CuO3.98 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23 | Pressure not reported | onset |
| Sm1.85Ce0.15CuO3.97 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 23 | Pressure not reported | onset |
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