Concentration dependence of the transition temperature in metallic spin glasses
R. Serral Gracia, Th. M. Nieuwenhuizen, I. V. Lerner
Abstract
The dependence of the transition temperature Tg in terms of the concentration of magnetic impurities c in spin glasses is explained on the basis of a screened RKKY interaction. The two observed power laws, Tg ~ c at low c and Tg ~ c2/3 for intermediate c, are described in a unified approach.
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