Critical exponents of a three-dimensional weakly diluted quenched Ising model
R. Folk a
Yu. Holovatch b
T. Yavorskii c
a Institut für Theoretische Physik, Johannes Kepler Universität, Altenbergerstr. 69, Linz, A-4040, Austria
b Institute for Condensed Matter Physics, National Academy of Sciences of Ukraine, ul. Svientsitskii 1, Lviv, 79011, Ukraine
c Ivan Franko Lviv National University, Kirilla i Mefodiya str. 6, Lviv, 79005, Ukraine
Universal and nonuniversal critical exponents of a three-dimensional Ising system with weak quenched disorder are discussed. Experimental, computational, and theoretical results are reviewed. Particular attention is given to field-theoretical renormalization-group results. Different renormalization schemes are considered with emphasis on the analysis of the divergent series obtained.