Mixed-state properties of superconducting MgB2 single crystals
M. Zehetmayer, M. Eisterer, J. Jun, S. M. Kazakov, J. Karpinski, A. Wisniewski, H. W. Weber
DOI 10.1103/PhysRevB.66.052505 · Physical Review B
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Abstract
We report on measurements of the magnetic moment in superconducting MgB2 single crystals. We find μ0Hc2c(0)=3.2 T, μ0Hc2ab(0)=14.5 T, γ=4.6, μ0Hc(0)=0.28 T, and κ(Tc)=4.7. The standard Ginzburg-Landau and London model relations lead to a consistent data set and indicate that MgB2 is a clean limit superconductor of intermediate coupling strength with very pronounced anisotropy effects.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38 | Pressure not reported | onset |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38.3 | Pressure not reported | unknown |
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