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Updated: Jul 19, 2026

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
Published on: September 30, 2014
Nonlinear domain-wall velocity enhancement by spin-polarized electric current
G S D Beach1, C Knutson, C Nistor
1Department of Physics, The University of Texas at Austin, Austin, TX 78712-0264, USA. gbeach@physics.utexas.edu
Abstract:
The interaction between a dc spin-polarized electric current and a magnetic domain wall in a Permalloy nanowire was studied by high-bandwidth scanning Kerr polarimetry. The full functional dependence of wall velocity on electric current and magnetic field is presented. With the pinning potential nulled by a field, current-induced velocity enhancements exceeded 35 m/s at a current density of approximately 6 x 10(11) A/m(2). This large enhancement, more than 10 times that found in pinning-dominated experiments, results in part from an interaction that is nonlinear in current and independent of current direction.
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