Specific heat jump at the superconducting transition temperature in BaFe1-xCox2As2 and BaFe1-xNix2As2 single crystals - Condensed Matter > SuperconductivityReport as inadecuate




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Abstract: We present detailed heat capacity measurements for BaFe1-xCox2As2 andBaFe1-xNix2As2 single crystals in the vicinity of the superconductingtransitions. The specific heat jump at the superconducting transitiontemperature Tc, Delta Cp-Tc, changes by a factor ~ 10 across these series.The Delta Cp-T$ vs. Tc data of this work together with the literature data forBaFe0.939Co0.0612As2, Ba0.55K0.45Fe2As2, and Ba0.6K0.4Fe2As2 scale wellto a single log-log plot over two orders of magnitude in Delta Cp-Tc and overabout an order of magnitude in Tc, giving Delta Cp-Tc ~ Tc^2.



Author: Sergey L. Bud'ko, Ni Ni, Paul C. Canfield

Source: https://arxiv.org/







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