Meissner state in finite superconducting cylinders with uniform applied magnetic field
F. M. Araujo-Moreira, C. Navau, A. Sanchez
DOI 10.1103/PhysRevB.61.634 · Physical Review B
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Abstract
We study the magnetic response of superconductors in the presence of low values of a uniform applied magnetic field. We report measurements of dc magnetization and ac magnetic susceptibility performed on niobium cylinders of different length-to-radius ratios, which show a dramatic enhancement of the initial magnetization for thin samples, due to the demagnetizing effects. The experimental results are analyzed by applying a model that calculates the magnetic response of the superconductor, taking into account the effects of the demagnetizing fields. We use the results of magnetization and current and field distributions of perfectly diamagnetic cylinders to discuss the physics of the demagnetizing effects in the Meissner state of type-II superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.2 | Pressure not reported | onset |
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