Positive curvature of Hc2 in layered superconductors
Stavros Theodorakis, Zlatko Tešanović
DOI 10.1103/PhysRevB.40.6659 · Physical Review B
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Abstract
We present a phenomenological calculation of the equilibrium upper critical field Hc2 in layered superconductors. We find that Hc2(T) has positive curvature near Tc, but becomes linear further away, as a result of a proximity effect between neighboring superconducting and nonsuperconducting layers, for low-Tc and high -Tc superconductors alike.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92.5 | Pressure not reported | onset |
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