Atom manipulation with DWs

Manipulating ultracold atoms with a recon gurable nanomagnetic system of domain walls.
A. D. West, K. J. Weatherill, T. J. Hayward, P. W. Fry, T. Schrefl, M. R. J. Gibbs, C. S. Adams, D. A. Allwood, and I. G. Hughes
ArXiv 1112.0485 (2011)

A schematic representation of the experiment. The array of undulating nanowires is shown. The wires are 125 nm wide and 30 nm thick and have a periodicity of 1 nm. The wire shading represents the magnetic polarity; the wires are shown in the `on' state, hosting DWs at each apex. Also indicated are magnetic fi eld lines emanating from and entering the DWs. Above the wires is shown the magnetic potentialisosurface corresponding to a value of  B = 1:57 mT.

A simple model for calculating magnetic nanowire domain wall fringing fields
A. D. West, T. J. Hayward, K. J. Weatherill, T. Schrefl, D. A. Allwood, and I. G. Hughe
ArXiv 1104.2249 (2011)

Fields generated by transverse and vortex DWs calculated via micromagnetic simulations. (a) and (b) are at z = 200 nm, whilst (c) and (d) are at z = 12:5 nm;
z = 0 is located in the center of the wire's thickness.