Physics – Condensed Matter – Superconductivity
Scientific paper
2002-04-09
Phys. Rev. B 66, 052505 (2002)
Physics
Condensed Matter
Superconductivity
Scientific paper
10.1103/PhysRevB.66.052505
We report on measurements of the magnetic moment in superconducting MgB2 single crystals. We find \mu_0H_{c2}^c(0) = 3.2 T, \mu_0H_{c2}^{ab}(0) = 14.5 T, \gamma = 4.6, \mu_0H_c(0) = 0.28 T, and \kappa(T_c) = 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.
Eisterer Michael
Jun Jinha
Karpinski Janusz
Kazakov Sergey M.
Weber Harald W.
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