Magnetic-field-induced pair-breaking effects in granular Pb films near the superconductor-to-insulator transition
Shih-Ying Hsu, J. M. Valles, Jr.
DOI 10.1103/PhysRevB.48.4164 · Physical Review B
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Abstract
We have measured the magnetic-field dependence, 0≤H≤8 T, of the resistive transitions R(T) of ultrathin granular superconducting Pb films with normal-state sheet resistances, RQ≤RN≤100 kΩ, where RQ=h/4e2≃6.45 kΩ. The data suggest that the magnetic-field-induced superconductor-to-insulator transition in these films occurs in a field regime where pair-breaking effects have significantly reduced the amplitude of the superconducting order parameter. We compare our results with those obtained on systems with uniform morphologies.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.2 | Pressure unresolved | onset |
| Pb 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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