Boron isotope effect in single crystals of ErNi2B2C superconductor
Abstract
The influence of local moment magnetism on the boron isotope effect of Tc was studied on single crystals of ErNi2B2C. Values of the partial isotope effect exponent of αB=0.100.02 and αB=0.100.04 were obtained based on two different criteria applied to extract Tc. No significant change in the partial isotope effect exponent compared to the ones obtained for LuNi2B2C was observed. Based on this result we conclude that pair-breaking due to the Er local magnetic moment appears to have no detectable influence on boron isotope effect of Tc.
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