1209.0926 (Eduardo Cuervo-Reyes)

Metallic spin-glasses: A beyond-mean-field approach to the
impurity-concentration dependence of the freezing-temperature    [PDF]

Eduardo Cuervo-Reyes

A new relation between the freezing temperature ($T^{}_g$), and the concentration of spins ($c$) in metallic spin-glasses is presented. $T^{}_g$ is obtained as a weighted sum of the absolute values of the spin-spin couplings ($K^{}_{ij}$), taking the critical scaling of the correlation function ($G$) into account. No disorder-average is required. Theoretical predictions resulting from this approach agree very well with the available data from {\sl Cu}Mn, {\sl Ag}Mn, and {\sl Au}Fe alloys.

View original: http://arxiv.org/abs/1209.0926