Mixed state properties of superconducting MgB2 single crystals

2002/04/09 by M. Zehetmayer, M. Eisterer, H. W. Weber +4 · 1 citation
Physics and Astronomy · #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.66.052505

published as Phys. Rev. B 66, 052505 (2002)

arxiv created 2002/04/09 · arxiv updated 2009/11/30

Abstract

We report on measurements of the magnetic moment in superconducting MgB2 single crystals. We find μ₀H_c2^c(0) = 3.2 T, μ₀H_c2^ab(0) = 14.5 T, γ= 4.6, μ₀H_c(0) = 0.28 T, and κ(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.

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