Domain Wall Motion in Axially Symmetric Spintronic Nanowires

Domain wall motion in nanowires

We investigated the motion of domain walls in ferromagnetic cylindrical nanowires by solving the Landau Lifshitz Gilbert equation numerically for a classical spin model in which energy contributions from exchange, crystalline anisotropy, dipole dipole interactions, and a driving magnetic field are considered. Depending on the diameter, either transverse domain walls or vortex walls are found. A...

Reconfigurable Spintronic Fabric using Domain Wall Devices

Domain wall motion in magnetic nanowires: an asymptotic approach.

We develop a systematic asymptotic description for domain wall motion in one-dimensional magnetic nanowires under the influence of small applied magnetic fields and currents and small material anisotropy. The magnetization dynamics, as governed by the Landau-Lifshitz-Gilbert equation, is investigated via a perturbation expansion. We compute leading-order behaviour, propagation velocities and fi...

On the Domain of Regularity of Generalized Axially Symmetric Potentials

which depends analytically on the two real variables x and y in a domain containing a segment of the singular line y — 0, is uniquely determined by its values on y = 0. In this note we shall consider the following problem: If the function g(z) =u(z, 0) is continued to complex values of z, to what extent does its domain of regularity determine the domain of regularity of u(x, y)? A partial answe...

Quasi-axially symmetric stellarators.

Confinement of a plasma for controlled thermonuclear fusion is studied numerically. Toroidal equilibria are considered, with an emphasis on the Modular Helias-like Heliac 2 (MHH2), which is a stellarator of low aspect ratio with just two field periods surrounded by 16 modular coils. The geometry is fully three-dimensional, but there is an axial symmetry of the magnetic structure that is calcula...