Thermally activated energy and critical magnetic fields of SmFeAsO${}_{0.9}$F${}_{0.1}$

Abstract

Thermally activated flux flow and vortex glass transition of recently discovered SmFeAsO${}_{0.9}$F${}_{0.1}$ superconductor are studied in magnetic fields up to 9.0 T. The thermally activated energy is analyzed in two analytic methods, of which one is conventional and generally used, while the other is closer to the theoretical description. The thermally activated energy values determined from both methods are discussed and compared. In addition, several critical magnetic fields determined from resistivity measurements are presented and discussed.

Accepted by Superconductor Science and Technolog. 5 page, 4 figures

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• Vortex glass-liquid transition and activated flux motion in an epitaxial, super-conducting NdFeAs(O,F) thin film
• Microwave Microscope Studies of Trapped Vortex Dynamics in Superconductors
• Weakly anisotropic superconductivity of Pr4Ni3O10 single crystals
• Complete electronic phase diagram and enhanced superconductivity in fluorine-doped PrFeAsO1-xFx
• Fluorine-substitution-dependent phase diagram and superconducting properties of Sm-based oxypnictides synthesized by a high-pressure growth technique
• The Anisotropy of Thermal Activation Energy of 2H-NbS${}_2$