Wed, 09 Jul 2008 13:33:45 BST CiteULike: dchens Eiselt http://www.citeulike.org/user/dchen/author/Eiselt CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/dchen/article/2754251 <i>Physical Review Letters, Vol. 98, No. 18. (2007)</i><br /><br />Magnetic transmission x-ray microscopy is used to directly visualize the influence of a spin-polarized current on domain walls in curved permalloy wires. Pulses of nanosecond duration and of high current density up to 1.0×1012 A/m2 are used to move and to deform the domain wall. The current pulse drives the wall either undisturbed, i.e., as composite particle through the wire, or causes structural changes of the magnetization. Repetitive pulse measurements reveal the stochastic nature of current-induced domain-wall motion. Direct Imaging of Stochastic Domain-Wall Motion Driven by Nanosecond Current Pulses Guido Meier Markus Bolte René Eiselt Benjamin Krüger Dong Kim Peter Fischer doi:10.1103/PhysRevLett.98.187202 Physical Review Letters, Vol. 98, No. 18. (2007) 2008-05-04T16:33:53-00:00 2007 Physical Review Letters 98 18 APS 2007 focus magnetic material