Current-induced domain wall motion with adiabatic spin torque only in cylindrical nanowires

Details Current-induced domain wall motion with adiabatic spin torque only in cylindrical nanowires Current-induced domain wall motion with adiabatic spin torque only in cylindrical nanowires

2010-03-21

arxiv.org/abs/1003.3976v1

Eur. Phys. J. B 79, 449 (2011)

Physics

Condensed Matter

Materials Science

4 pages, 0 figures

Scientific paper

We investigate current-driven domain wall (DW) propagation in magnetic nanowires in the framework of the modified Landau-Lifshitz-Gilbert equation with both adiabatic and nonadiabatic spin torque (NAST) terms. Contrary to the common opinion that NAST is indispensable for DW motion[1,2], we point out that adiabatic spin torque (AST) only is enough for current-driven DW motion in a cylindrical (uniaxial) nanowire. Apart from a discussion of the rigid DW motion from the energy and angular momentum viewpoint, we also propose an experimental scheme to measure the spin current polarization by combining both field and current driven DW motion in a flat (biaxial) wire.

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