Pair weakening in mixed rare-earth nickel borocarbides (R,R')Ni2B2C

Details Pair weakening in mixed rare-earth nickel borocarbides (R,R')Ni2B2C Pair weakening in mixed rare-earth nickel borocarbides (R,R')Ni2B2C

2008-11-11

arxiv.org/abs/0811.1694v1

Physics

Condensed Matter

Superconductivity

10 pages, 5 figures

Scientific paper

In this study pseudoquaternary rare-earth nickel borocarbide superconductors RxR'1-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 superconducting 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).

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