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Nanomagnetic engineering of the properties of domain wall atom traps.

Hayward, T. J. and West, A. D. and Weatherill, K. J. and Schrefl, T. and Hughes, I. G. and Allwood, D. A. (2011) 'Nanomagnetic engineering of the properties of domain wall atom traps.', Journal of applied physics., 110 (12). p. 123918.

Abstract

We have used the results of micromagnetic simulations to investigate the effects of nanowire geometry and domain wall magnetization structure on the characteristic parameters of magnetic atom traps formed by domain walls in planar ferromagnetic nanowires. It is found that when traps are formed in the near-field of a domain wall both nanowire geometry and wall structure have a substantial effect on trap frequency (how tightly atoms are spatially confined) and adiabaticity (how closely the atoms’ magnetic moments track the applied field direction within the trap). We also show that in certain regimes a trap’s depth depends only on the amplitude of an externally applied rotating magnetic field, thus allowing it to be tuned independently of the trap’s other critical parameters.

Item Type:Article
Full text:PDF - Published Version (2202Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1063/1.3671631
Publisher statement:© 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Hayward, T. J. and West, A. D. and Weatherill, K. J. and Schrefl, T. and Hughes, I. G. and Allwood, D. A. (2011) 'Nanomagnetic engineering of the properties of domain wall atom traps.', Journal of applied physics., 110 (12). p. 123918and may be found at http://dx.doi.org/10.1063/1.3671631
Record Created:25 Sep 2012 10:35
Last Modified:26 Sep 2012 09:54

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