I study the normal-to-superconducting (NS) transition within the Ginzburg-Landau (GL) model, taking into account the fluctuations in the m-component complex order parameter ψ α and the vector potential A in the arbitrary dimension d, for any m. I find that the transition is of second-order and that the previous conclusion of the fluctuation-driven first-order transition is an artifact of the br...

We report on electrically switchable polarization and ferroelectric domain scaling over a thickness range of 5–100 nm in BiFeO3 films deposited on [110] vicinal substrates. The BiFeO3 films of variable thickness were deposited with SrRuO3 bottom layer using the pulsed laser deposition technique. The domains are engineered into preferentially oriented patterns due to substrate vicinality along t...

A recent article [1] presents a semi-analytical method to solve the Landau-Lifshitz (LL) equation. Spin motion is computed analytically as precession about the effective field H, where H is assumed fixed over the time step. However, the exchange field dominates at short range and varies at the time scale of neighbor spin precessions, undermining the fixed field assumption. We present an axis co...

Using the complex stereographic variable representation for the macrospin, from a study of the nonlinear dynamics underlying the generalized Landau-Lifshitz(LL) equation with Gilbert damping, we show that the spin-transfer torque is effectively equivalent to an applied magnetic field. We study the macrospin switching on a Stoner particle due to spin-transfer torque on application of a spin pola...

We propose an indirect approach to the generation of a two-dimensional quasiperiodic (QP) pattern in convection and similar nonlinear dissipative systems where a direct generation of stable uniform QP planforms is not possible. An eightfold QP pattern can be created as a broad transient layer between two domains filled by square cells (SC) oriented under the angle of 45 degrees relative to each...

Molecular dynamics simulations were used to study the jamming transitions occurring in colloidal dispersions interacting through a short-ranged van der Waals attraction and a longer-ranged electrostatic repulsion as represented by the classical Derjaguin– Landau–Verwey–Overbeek (DLVO) theory. The structural and dynamics properties near the jamming transition were investigated at various paramet...

Abstract The problem of the Darrieus-Landau instability at a discontinuous deflagration front in a compressible flow is solved. Numerous previous attempts to solve this problem suffered from the deficit of boundary conditions. Here, the required additional boundary condition is derived rigorously taking into account the internal structure of the front. The derived condition implies a constant m...

The Casimir scaling phenomena of the nonperturbative force is viewed in terms of the hadronic flux tube as described by the dual Ginzburg-Landau (DGL) theory, the dual superconducting scenario of confinement. The ratios of the string tension of flux tube between higher and fundamental SU(3) representations, dD ≡ σD/σD=3, are systematically studied in a Weyl symmetric formulation of the DGL theo...

In series of papers [1, 2] Fomin introduced and discussed the so-called robust phases in a system with frozen orientational disorder (with application to superfluid 3 He in aerogel). We show that his consideration is based on the erroneous overestimation of the fluctuation energy which comes from the interaction of the Goldstone modes with the frozen disorder. This interaction leads to the Imry...