Magnetic instabilities in high-temperature superconductors under rapidly varying magnetic fields
A. Gerber, J. N. Li, Z. Tarnawski, J. J. M. Franse, A. A. Menovsky
DOI 10.1103/PhysRevB.47.6047 · Physical Review B
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Abstract
The irreversible magnetization of single-crystalline samples of the high-temperature superconducting compounds LaSr2CuO4 and Bi2Sr2CaCu2O has been studied under rapidly varying magnetic fields. Three types of behavior can be identified for increasing rates of the field variation: first, a stable regime close to the critical state; magnetic instabilities or jumps for intermediate ramp rates; and a second stable regime with a strongly suppressed magnetization for high sweep rates. The conditions for breaking the critical state and the dynamics of the flux penetration at the instability are discussed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LaSr2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O 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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