Spatially correlated disorder in striped precursor magnetic modulations

Abstract We use a Ginzburg–Landau model that includes long-range dipolar interactions and spatially correlated quenched-in disorder coupled to the local magnetization to study the properties of the precursor magnetic modulations as a function of the characteristics of the disorder. We find that although the modulation pattern is very robust and does not depend on details of the pair correlation function G ( r ) , the scaling behaviour of the characteristic length of the striped magnetic modulations depends on the behaviour of G ( r ) for small values of r .