Concentration dependence of the transition temperature in metallic spin glassesR. Serral Gracià1, Th. M. Nieuwenhuizen1 and I. V. Lerner2
1 University of Amsterdam, Institute for Theoretical Physics Valckenierstraat 65, 1018XE Amsterdam, The Netherlands
2 School of Physics and Astronomy, University of Birmingham Edgbaston, Birmingham B152TT, UK
(Received 21 November 2003; accepted 2 March 2004)
The dependence of the transition temperature 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, at low c and for intermediate c, are described in a unified approach.
75.10.Nr - Spin-glass and other random models.
75.50.Lk - Spin glasses and other random magnets.
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