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Fluctuation conductivity in two-band superconductor SmFeAsO0.8F0.2

Askerzade I. N., Tagiyeva-Askerbeyli R. T.

Materials Science Poland

2015

Vol. 33, No. 3

644--648

In this study we have calculated the fluctuation conductivity near critical temperature of SmFeAsO0.8F0.2 superconductor using two-band Ginzburg-Landau theory. It was illustrated that in the absence of external magnetic field, the two-band model reduced to a single effective band theory with modified temperature dependences. The calculations revealed three-dimensional character of fluctuations of conductivity in the new Fe-based superconductor SmFeAsO0.8F0.2. It has been shown that such a model is in good agreement with experimental data for this compound.