Flux dynamics of a superconductor showing a glassy paramagnetic Meissner state
E. L. Papadopoulou, P. Svedlindh, P. Nordblad
DOI 10.1103/PhysRevB.65.144524 · Physical Review B
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Abstract
The flux dynamics of a bulk, melt-cast Bi2Sr2CaCu2O8 (Bi2212) sample has been studied by using ac-susceptibility measurements. The sample shows the paramagnetic Meissner effect (PME) and it is found that the dynamic properties of the PME are remarkably different from the dynamics of the PME of sintered Bi2212 samples. The dynamics of sintered samples implies the existence of independent spontaneous current loops, the dynamics of the melt-cast sample, in addition, suggests that the current loops in this case interact to form a low-temperature glassy phase with some similarities to a spin-glass phase.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 87 | Pressure not reported | onset |
| Bi2223 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 105 | Pressure not reported | onset |
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