Improved magnetic domain-wall control with transverse fields

Magnetic domain wall propagation under ferroelectric control

E. Mikheev,1 I. Stolichnov,1 E. De Ranieri,2 J. Wunderlich,2 H. J. Trodahl,3 A. W. Rushforth,4 S. W. E. Riester,1 R. P. Campion,4 K. W. Edmonds,4 B. L. Gallagher,4 and N. Setter1 1Ceramics Laboratory, EPFL-Swiss Federal Institute of Technology, Lausanne 1015, Switzerland 2Hitachi Cambridge Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, United Kingdom 3MacDiarmid Institute for Advanced Mater...

Domain wall solutions with Abelian gauge fields

We study kink (domain wall) solutions in a model consisting of two complex scalar fields coupled to two independent Abelian gauge fields in a Lagrangian that has U(1)×U(1) gauge plus Z2 discrete symmetry. We find consistent solutions such that while the U(1) symmetries of the fields are preserved while in their respective vacua, they are broken on the domain wall. The gauge field solutions show...

Chirality-dependent domain wall pinning in a multinotched planar nanowire and chirality preservation using transverse magnetic fields

Transverse and vortex domain wall structure in magnetic nanowires with uniaxial in-plane anisotropy.

Micromagnetic and analytical models are used to investigate how in-plane uniaxial anisotropy affects transverse and vortex domain walls in nanowires where shape anisotropy dominates. The effect of the uniaxial anisotropy can be interpreted as a modification of the effective wire dimensions. When the anisotropy axis is aligned with the wire axis (θ(a) = 0), the wall width is narrower than when n...

Magnetohydrodynamic channel flows with weak transverse magnetic fields.

Magnetohydrodynamic flow of an incompressible fluid through a plane channel with slowly varying walls and a magnetic field applied transverse to the channel is investigated in the high Reynolds number limit. It is found that the magnetic field can first influence the hydrodynamic flow when the Hartmann number reaches a sufficiently large value. The magnetic field is found to suppress the steady...