Reentrant cluster glass behavior in La2CoMnO6 nanoparticles

Interacting ferromagnetic nanoparticles in discontinuous Co80Fe20/Al2O3 multilayers: From superspin glass to reentrant superferromagnetism

Quantum critical behavior of the cluster glass phase.

In disordered itinerant magnets with arbitrary symmetry of the order parameter, the conventional quantum critical point between the ordered phase and the paramagnetic Fermi liquid (PMFL) is destroyed due to the formation of an intervening cluster glass (CG) phase. In this Letter, we discuss the quantum critical behavior at the CG-PMFL transition for systems with continuous symmetry. We show tha...

Entropy-Driven Reentrant Behavior in CMR Manganites

We discuss the origin of the reentrant behaviors of insulating states above the Curie temperature of the colossal magnetoresistance manganites. We consider a system where charge ordering and ferromagnetism compete with each other. In the presence of randomness which pins charge order fluctuations, entropy-driven reentrant behaviors will appear, which explains the typical temperature dependence ...

Is there a reentrant glass in binary mixtures?

By employing computer simulations for a model binary mixture, we show that a reentrant glass transition upon adding a second component occurs only if the ratio alpha of the short-time mobilities between the glass-forming component and the additive is sufficiently small. For alpha approximately 1, there is no reentrant glass, even if the size asymmetry between the two components is large, in acc...

Density anomalies and reentrant spinodal behavior *

A lattice model that displays anomalous density behavior and exhibits a reentrant spinodal is developed. This model is solved in the mean field approximation and the interrelation between density maxima and the reentrance of the spinodal is explicitly demonstrated. The limits of stability of the liquid phase are obtained at positive as well as negative pressures, and the nature of the limits of...