We present numerical calculations of the spin transfer torque resulting in current-induced domain wall motion. Rather than the conventional micromagnetic finite difference or finite element method, we use an atomistic/classical Heisenberg spin model approach, which is well suited to study...

The nature of the melting transition for a system of hard disks with translational degrees of freedom in two spatial dimensions has been analyzed by a novel finite size scaling technique. The behavior of the system is consistent with the predictions of the KTHNY theory. Hard and soft disks in...

We present molecular dynamics simulation results of quenches into the unstable region of a two-dimensional Lennard-Jones system. The evolution of the system from the non-equilibrium state into equilibrium was analyzed with a dynamical block analysis. This can lead to a new approach in the study...

We use Monte Carlo techniques and analytical methods to study the phase diagram of the M-component Widom-Rowlinson model on the bcc lattice: there are M species all with same fugacity z and a nearest-neighbor hard core exclusion between unlike particles. Simulations show that for M ⩾ 3 there...

The decay of metastable states is initiated by a nucleation process in which a free energy barrier is overcome, while in unstable states fluctuations can grow unaffected by such a barrier. The first part of this review considers the significance of the spinodal line separating the metastable and...

Materials formed from long flexible macromolecules differ from their small-molecule analogs, because corresponding collective length scales are distinctly larger and many dynamical phenomena are very much slower; in addition, the variation of chain length N yields a control parameter that leaves...