The ground-state phase diagram of an Ising spin-glass model on a random graph with an arbitrary fraction w of ferromagnetic interactions is analysed in the presence of an external field. Using the replica method, and ...

The ferric pseudobrookite is a rare example of uniaxial anisotropic spin-glass insulator, depicting a multiglass behavior and magnetoelectric coupling. Here, we present Raman spectroscopy results in order to elucidate the ...

The statistical properties of infrequent particle displacements, greater than a certain distance, are known as jump dynamics in the context of structural glass formers. We generalize the concept of a jump to the case of a ...

The competition between cluster spin glass and ferromagnetism or antiferromagnetism is studied in this work. The model considers clusters of spins with short-range ferromagnetic or antiferromagnetic interactions (J0) and ...

The magnetic and transport properties of the compound La0.7Sr0.3Mn1-xFexO3(0.1 ≤ x ≤ 0.4) have been studied by means of electrical resistivity, AC magnetic susceptibility, and DC magneti- zation. At low concentrations ...

We set the formalism to study the way in which the choice of canonical equilibrium initial conditions affect the real-time dynamics of quantum disordered models. We use a path integral formulation on a time contour with ...

We study the dynamics of a classical disordered macroscopic model completely isolated from the environment reproducing, in a classical setting, the 'quantum quench' protocol. We show that, depending on the pre and post ...