Positive field-cooled susceptibility in high-Tc superconductors
B. Schliepe, M. Stindtmann, I. Nikolic, K. Baberschke
DOI 10.1103/PhysRevB.47.8331 · Physical Review B
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Abstract
We confirm the recent finding of a paramagnetic Meissner effect on melt-processed Bi2Sr2CaCu2O8 ceramics: on cooling in fields below 200 mG, the samples show a magnetization that is parallel to the applied field. It is shown that the sum rule for the remanent magnetization remains valid in this field range, yielding an absolute value of the remanent magnetization that exceeds the value of the zero-field-cooled magnetization. This observation is discussed in terms of unconventional vortices and current loops. It is argued that the effect is not due to paramagnetic impurities.
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. | — | Pressure not reported | unknown |
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