Current induced torques between ferromagnets and compensated antiferromagnets: symmetry and phase coherence effects.

Published

February 19, 2014

Author(s)

Paul M. Haney, Karthik Prakhya, Adrian Popescu

Abstract

It is shown that the current-induced torques between a ferromagnetic layer and an antiferromagnetic layer with a compensated interface vanish when the ferromagnet is aligned with an axis of spin-rotation symmetry of the antiferromagnet. For properly chosen geometries this implies that the current induced torque can stabilize the out-of-plane (or hard axis) orientation of the ferromagnetic layer. This current-induced torque relies on phase coherent transport, and we calculate the robustness of this torque to phase breaking scattering. From this it is shown that the torque is not linearly dependent on applied current, but has an absolute maximum.

Citation

Physical Review B

Volume

89

Issue

5

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevB.89.054421

Citation

Haney, P. , Prakhya, K. and Popescu, A. (2014), Current induced torques between ferromagnets and compensated antiferromagnets: symmetry and phase coherence effects., Physical Review B, [online], https://doi.org/10.1103/PhysRevB.89.054421 (Accessed October 18, 2025)