Current-induced domain wall motion in Rashba spin-orbit system

Abstract

Current-induced magnetic domain wall motion, induced by transfer of spin transfer effect due to exchange interaction, is expected to be useful for next generation high-density storages. We here show that efficient domain wall manipulation can be achieved by introduction of Rashba spin-orbit interaction, which induces spin precession of conduction electron and acts as an effective magnetic field. Its effect on domain wall motion depends on the wall configuration. We found that the effect is significant for Bloch wall with the hard axis along the current, since the effective field works as $\beta$ or field-like term and removes the threshold current if in extrinsic pinning is absent. For Néel wall and Bloch wall with easy axis perpendicular to Rashba plane, the effective field induces a step motion of wall corresponding to a rotation of wall plane by the angle of approximately $\pi$ at current lower than intrinsic threshold. Rashba interaction would therefore be useful to assist efficient motion of domain walls at low current.

References in corpus (7)

• Microscopic Calculation of Spin Torques in Disordered Ferromagnets
• Functional Keldysh Theory of Spin Torques
• Threshold Current of Domain Wall Motion under Extrinsic Pinning, $\beta$-Term and Non-Adiabaticity
• Spin torque and force due to current for general spin textures
• Theory of Domain Wall Dynamics under Current
• Gauge Field Formulation of Adiabatic Spin Torques
• Gilbert damping and spin Coulomb drag in a magnetized electron liquid with spin-orbit interaction

Cited by in corpus (22)

• Microscopic approach to current-driven domain wall dynamics
• Matching domain wall configuration and spin-orbit torques for very efficient domain-wall motion
• Microscopic Theory of Rashba Interaction in Magnetic Metal
• Intraband and interband spin-orbit torques in non-centrosymmetric ferromagnets
• The domain wall spin torque-meter
• Anomalous spin-orbit torque switching due to field-like torque-assisted domain wall reflection
• Spin-transfer torque and spin-polarization in topological-insulator/ferromagnet vertical heterostructures
• Angular dependence of spin-orbit spin transfer torques
• Universal charge and current on magnetic domain walls in Weyl semimetals
• Spin motive force induced by Rashba interaction in the strong sd coupling regime
• Spin-Motive Forces and Current-Induced Torques in Ferromagnets
• Interfacial current-induced torques in Pt/Co/GdOx
• Deficiency of the Bulk Spin Hall Effect Model for Spin-Orbit Torques in Magnetic Insulator/Heavy Metal Heterostructures
• Spin Orbit Torque in two dimensional Antiferromagnetic Topological Insulators
• Current-driven dynamics of coupled domain walls in a synthetic antiferromagnet
• Electrically driven spin torque and dynamical Dzyaloshinskii-Moriya interaction in magnetic bilayer systems
• Monopoles in ferromagnetic metals
• Spin orbit effects in CoFeB/MgO hetereostructures with heavy metal underlayers
• Topological damping Rashba spin orbit torque in ballistic magnetic domain walls
• Alternating Current-induced Interfacial Spin-transfer Torque
• Theory of electron transport and magnetization dynamics in metallic ferromagnets
• Efficient stopping of current-driven domain wall using a local Rashba field