engleski

Coherence lengths and anisotropy in MgB2 superconductor

Field and temperature microwave measurements have been carried out on MgB2 thin film grown on Al2O3 substrate. The analysis reveals the mean field coherence length in the mixed state and a temperature independent anisotropy ratio 2. At the superconducting transition, the scaling of the fluctuation conductivity yields the Ginzburg-Landau coherence length with a different anisotropy ratio 2.8, also temperature independent.

superconductivity; MgB2; coherence length; anisotropy; microwave; thin film; superconducting transition

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