Spin-transfer torques in anti-ferromagnetic metals from first principles

Abstract

In spite of the absence of a macroscopic magnetic moment, an anti-ferromagnet is spin-polarized on an atomic scale. The electric current passing through a conducting anti-ferromagnet is polarized as well, leading to spin-transfer torques when the order parameter is textured, such as in anti-ferromagnetic non-collinear spin valves and domain walls. We report a first principles study on the electronic transport properties of anti-ferromagnetic systems. The current-induced spin torques acting on the magnetic moments are comparable with those in conventional ferromagnetic materials, leading to measurable angular resistances and current-induced magnetization dynamics. In contrast to ferromagnets, spin torques in anti-ferromagnets are very nonlocal. The torques acting far away from the center of an anti-ferromagnetic domain wall should facilitate current-induced domain wall motion.

The paper has substantially been rewritten, 4 pages, 5 figures

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• Electrical manipulation of a ferromagnet by an antiferromagnet
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• Antiferromagnetic Tunnel Junctions for Spintronics
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• Dynamics of Antiferromagnets Driven by Spin Current
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• Symmetry and the macroscopic dynamics of antiferromagnetic materials in the presence of spin-polarized current
• Electron Dynamics in Slowly Varying Antiferromagnetic Texture
• Topological spin Hall effects and tunable skyrmion Hall effects in uniaxial antiferromagnetic insulators
• Spin Transfer Torque in Antiferromagnetic Spin-Valves: From Clean to Disordered Regimes
• Dephasing of Transverse Spin Current in Ferrimagnetic Alloys
• Spin-transfer torques in antiferromagnets: efficiency and quantification method
• Strong variation of spin-orbit torques with relative spin relaxation rates in ferrimagnets
• Magnetization damping in noncollinear spin valves with antiferromagnetic interlayer couplings
• Mode-Dependent Damping in Metallic Antiferromagnets Due to Inter-Sublattice Spin Pumping
• Field-like spin orbit torque in ultra-thin polycrystalline FeMn films
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• Spin Orbit Torque in two dimensional Antiferromagnetic Topological Insulators
• Antiferromagnetic Magnonic Crystals
• Controllable Spin-Transfer Torque on an Antiferromagnet in a Dual Spin-Valve
• Heat transport between antiferromagnetic insulators and normal metals
• Classification of Magnetic Forces on Antiferromagnetic Domain Wall
• Recent progress in antiferromagnetic dynamics
• Soliton-like magnetization textures in non-collinear antiferromagnets
• Multiscale approach to spin transport in magnetic multilayers
• Quantum spin torque driven transmutation of antiferromagnetic Mott insulator
• Exotic rare earth-based materials for emerging spintronic technology
• Chirality Sensitive Domain Wall Motion in Spin-Orbit Coupled Ferromagnets
• Spin-Transfer Torque in Altermagnets with Magnetic Textures
• Electron transport through antiferromagnetic spin textures and skyrmions in a magnetic tunnel junction
• Numerical Computation of Spin-Transfer Torques for Antiferromagnetic Domain walls
• Spin-neutral currents for spintronics
• Microscopic Calculation of Spin Torques in Textured Antiferromagnets
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• Cross effect of magnetic field and charge current on antiferromagnetic dynamics
• Coupling magneto-elastic Lagrangians to spin transfer torque sources
• Landauer theory of ballistic torkances in non-collinear spin valves
• Giant Crystal Hall Effect in Collinear Antiferromagnetic $\gamma$-FeMn
• Adiabatic and Nonadiabatic Spin-transfer Torques in Antiferromagnets
• Anomalies in the switching dynamics of C-type antiferromagnets and antiferromagnetic nanowires
• Voltage-Controlled High-Bandwidth Terahertz Oscillators Based On Antiferromagnets
• First-principles study of spin-transfer torque in Co2MnSi/Al/Co2MnSi spin-valve
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• Large Surface Magnetization in Noncentrosymmetric Antiferromagnets
• Magnetoelastic Coupling and Possibility of Spintronic Electromagnetomechanical Effects
• First-principles calculations of current-induced spin-transfer torques in magnetic domain walls
• Spin transfer torques and spin-dependent transport in a metallic F/AF/N tunneling junction
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