Abstract
The quaternary intermetallic rare-earth nickel borocarbides, RNi 2B 2C, are a family of compounds that show magnetic behavior, superconducting behavior, and/or both. Thermal transport measurements reveal both electron and phonon scattering mechanisms, and can provide information on the interplay of these two long-range phenomena. For R=Dy and Ho, the thermal conductivity is dominated by electrons and the low temperature thermal conductivity exhibits a marked loss of scattering at the antiferromagnetic ordering temperature, T N. Unlike the case for R=Y and Lu non-magnetic superconductors, a phonon peak in the thermal conductivity below T c is not observed down to T=1.4 K for the R=Dy and Ho magnetic superconductors.
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