An addendum to our previous papers in Phys. Lett. B539 (2002) 46 and Phys. Lett. B502 (2001) 51, contributed to the CERN meeting First data from the LHC heavy ion run, March 4, 2011
In this study pseudoquaternary rare-earth nickel borocarbide superconductors RxR1-xNi2B2C have been investigated predominantly in the diluted limit x << 1 or (1 x) << 1. In all of these materials structural disorder results in a reduction of the supe
rconducting transition temperature Tc . Depending on the selection of the rare earth elements R and R this disorder induced deterioration of superconductivity is combined with magnetic pair breaking of Abrikosov-Gorkov type or pair breaking of non-magnetic impurities in antiferromagnetic superconductors (Morozov-type of pair breaking).
