Derivation of equations of motion for the magnetization of an antiferromagnet

Roepke, G.

doi:10.1007/bf01036584

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…where the damping term is added phenomenologically, 40 and the STT term-where ω s is linear in the applied spin voltage-is due originally to Ref. 27; we partially rederive it for the reader in in Appendix A.…”

Section: Macrospin Modelmentioning

confidence: 99%

“…Here we present results both for the bulk system and a semi-infinite system with an interface. Based on previous work, 40 we expect that surface e↵ects, by their role in modifying the magnons' activation threshold, will play an important part in the experimental realization of spin wave modes. In particular, we explore variations of the exchange coupling on the surfaces with both compensated and uncompensated net magnetizations.…”

Section: Introductionmentioning

confidence: 99%

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Spin-transfer torque induced spin waves in antiferromagnetic insulators

et al. 2015

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We explore the possibility of exciting spin waves in insulating antiferromagnetic films by injecting spin current at the surface. We analyze both magnetically compensated and uncompensated interfaces. We find that the spin current induced spin-transfer torque can excite spin waves in insulating antiferromagnetic materials and that the chirality of the excited spin wave is determined by the polarization of the injected spin current. Furthermore, the presence of magnetic surface anisotropy can greatly increase the accessibility of these excitations.

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Section: Macrospin Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spin-transfer torque induced spin waves in antiferromagnetic insulators

et al. 2015

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Coupling magneto-elastic Lagrangians to spin transfer torque sources

Nussle

Thibaudeau

2019

Journal of Magnetism and Magnetic Materials

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The consequences of coupling magnetic and elastic degrees of freedom, where spins and deformations are carried by point-like objects subject to local interactions, are studied, theoretically and by detailed numerical simulations. From the constrained Lagrangians we derive consistent equations of motion for the coupled dynamical variables. In order to probe the dynamics of such a system, we consider external perturbations, such as spin transfer torques for the magnetic part, and homogeneous stresses for the elastic part, associated to their corresponding damping. This approach is applied to the study of ultrafast switching processes in anti-ferromagnetic systems, which have recently attracted attention as candidates for anti-ferromagnetic spintronic devices. Our strategy is then checked in simple, but instructive, situations. We carried out numerical experiments to study, in particular, how the magnetostrictive coupling and external stresses affect the nature of the switching processes in a prototype anti-ferromagnetic material.

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Derivation of equations of motion for the magnetization of an antiferromagnet

Cited by 2 publications

References 5 publications

Spin-transfer torque induced spin waves in antiferromagnetic insulators

Spin-transfer torque induced spin waves in antiferromagnetic insulators

Coupling magneto-elastic Lagrangians to spin transfer torque sources

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