Intrinsic Spin Torque Without Spin-Orbit Coupling

Abstract

We derive an intrinsic contribution to the non-adiabatic spin torque for non-uniform magnetic textures. It differs from previously considered contributions in several ways and can be the dominant contribution in some models. It does not depend on the change in occupation of the electron states due to the current flow but rather is due to the perturbation of the electronic states when an electric field is applied. Therefore it should be viewed as electric-field-induced rather than current-induced. Unlike previously reported non-adiabatic spin torques, it does not originate from extrinsic relaxation mechanisms nor spin-orbit coupling. This intrinsic non-adiabatic spin torque is related by a chiral connection to the intrinsic spin-orbit torque that has been calculated from the Berry phase for Rashba systems.

1 figure, 11 pages

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Cited by in corpus (9)

• Spin-orbit torques from interfacial spin-orbit coupling for various interfaces
• Spin-orbit torque in 3D topological insulator-ferromagnet heterostructure: crossover between bulk and surface transport
• A fully relativistic description of spin-orbit torques by means of linear response theory
• Unified theory of magnetization dynamics with relativistic and nonrelativistic spin torques
• Chiral damping, chiral gyromagnetism and current-induced torques in textured one-dimensional Rashba ferromagnets
• Roles of chiral renormalization on magnetization dynamics in chiral magnets
• Theory of chiral effects in magnetic textures with spin-orbit coupling
• Numerical Computation of Spin-Transfer Torques for Antiferromagnetic Domain walls
• Laser-induced torques in spin spirals