Current-driven dynamics of coupled domain walls in a synthetic antiferromagnet

Abstract

We develop the theory of magnetic domain wall motion in coupled double-layer systems where electrons can hop between the layers giving rise to an antiferromagnetic coupling. We demonstrate that the force from the interlayer coupling drives the walls and the effect of the extrinsic pinning is greatly reduced if the domain walls are initially separated. The threshold current density for metastable spin-aligned configurations is also much lower. We conclude that the interlayer coupling has a significant effect on domain wall mobility in double-layer systems.

9 pages, 9 figures

References in corpus (3)

• Microscopic approach to current-driven domain wall dynamics
• Current-induced domain wall motion in Rashba spin-orbit system
• Threshold Current of Domain Wall Motion under Extrinsic Pinning, $\beta$-Term and Non-Adiabaticity

Cited by in corpus (4)

• Antiferromagnetic Domain Wall as Spin Wave Polarizer and Retarder
• Synthetic Antiferromagnetic Spintronics: Part of a collection of reviews on antiferromagnetic spintronics
• Theory of electron transport and magnetization dynamics in metallic ferromagnets
• Efficient stopping of current-driven domain wall using a local Rashba field