Concentration dependence of the transition temperature in metallic spin glasses

Abstract

The dependence of the transition temperature $T_g$ 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, $T_{g}c$ at low $c$ and $T_g{c}^{2/3}$ for intermediate $c$, are described in a unified approach.

4 pages