Computation of Relative Variances of Magnetization and Susceptibility in a Disordered Ising Model: The Results of Computer Simulation

Resumo

Based on the Monte Carlo method, the relative variances of magnetization R_m and susceptibility R_χ in the disordered spin lattice Ising model are computed as a function of the degree of the dilution of a disorder. It is shown that the introduction of a disorder in the form of nonmagnetic impurities in the three-dimensional Ising model produces nonzero values for R_m and R_χ at the critical point.