Domain wall propagation in magnetic nanowires by spin polarized current injection

• Main Authors: Vernier, Nicolas, Allwood, Dan A, Atkinson, Del, Cooke, Michael D, Cowburn, Russell P
• Format: Journal Article
• Language: English
• Published: 24-04-2003
• Subjects: Physics - Materials Science
• DOI: 10.48550/arxiv.cond-mat/0304549

We demonstrate movement of a head-to-head domain wall through a magnetic
nanowire simply by passing an electrical current through the domain wall and
without any external magnetic field applied. The effect depends on the sense
and magnitude of the electrical current and allows direct propagation of domain
walls through complex nanowire shapes, contrary to the case of magnetic field
induced propagation. The efficiency of this mechanism has been evaluated and
the effective force acting on the wall has been found equal to 0.88x10-9 N.A-1.