Low frequency transport measurements in GdSr2RuCu2O8

Abstract

Low frequency transport measurements are performed on GdSr2RuCu2O8 pellets. The observed current-voltage curves are qualitatively explained in the framework of a simple phenomenological model accounting for coexistence of ferromagnetism and superconductivity in the sample. A Curie temperature TcM=133 K and a superconducting critical temperature TcS=18 K, with an onset temperature TcO=33 K, are extracted from the analysis of the current-voltage curves.

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