Delay of disorder by diluted polymers

Disorder effects in diluted magnetic semiconductors

In recent years, disorder has been shown to be crucial for the understanding of diluted magnetic semiconductors. Effects of disorder in these materials are reviewed with the emphasis on theoretical works. The types and spatial distribution of defects are discussed. The effect of disorder on the intimately related transport and magnetic properties are considered from the viewpoint of both the ba...

Effects of disorder on ferromagnetism in diluted magnetic semiconductors.

We present results of a numerical mean-field treatment of interacting spins and carriers in doped diluted magnetic semiconductors, which takes into account the positional disorder present in these alloy systems. Within our mean-field approximation, disorder enhances the ferromagnetic transition temperature for metallic densities not too far from the metal-insulator transition. Concurrently, the...

Conformational disorder in conjugated polymers

Disorder induced hysteresis in diluted kinetic Ising model

Dynamic phase transition in diluted kinetic Ising model in two dimensions has been studied in presence of external time dependent oscillating magnetic field applying Glauber Monte Carlo spin flip dynamics. A dynamic phase transition from a dynamically ordered to dynamically disordered ferromagnet is identified studying dynamic order parameter against temperature for different concentrations of ...

Quenched Disorder Distributions in Three-Dimensional Diluted Ferromagnets

1 Institut für Theoretische Physik, Universität Leipzig, Augustusplatz 10/11, D-04109 Leipzig, Germany [email protected] 2 Groupe de Physique des Matériaux, Université de Rouen, F-76801 Saint-Etienne du Rouvray Cedex, France [email protected] 3 Laboratoire de Physique des Matériaux, Université Henri Poincaré, Nancy I, BP 239, F-54506 Vandœuvre les Nancy Cedex, France c...