Current driven magnetization dynamics in helical spin density waves

Abstract

A mechanism is proposed for manipulating the magnetic state of a helical spin density wave using a current. In this paper, we show that a current through a bulk system with a helical spin density wave induces a spin transfer torque, giving rise to a rotation of the order parameter.The use of spin transfer torque to manipulate the magnetization in bulk systems does not suffer from the obstacles seen for magnetization reversal using interface spin transfer torque in multilayered systems. We demonstrate the effect by a quantitative calculation of the current induced magnetization dynamics of Erbium. Finally we propose a setup for experimental verification.

In the previous version of this paper was a small numerical mistake made when evaluating equation 3 and 9. The number of digits given in the calculation of the torque current tensor is reduced to better represent the accuracy of the calculation. A slightly modified paper have been published in Phys. Rev. Lett. 96, 256601 (2006) 4 pages 3 figures

References in corpus (7)

• Current-driven Magnetization Reversal and Spin Wave Excitations in Co/Cu/Co Pillars
• Anatomy of Spin-Transfer Torque
• Macrospin Models of Spin Transfer Dynamics
• Boltzmann Test of Slonczewski's Theory of Spin Transfer Torque
• Field dependence of magnetization reversal by spin transfer
• Spin Transfer Torque for Continuously Variable Magnetization
• Magnetization reversal by injection and transfer of spin: experiments and theory

Cited by in corpus (5)

• Spin Transfer Torques in MnSi at Ultra-low Current Densities
• Spin-orbit torques in Co/Pt(111) and Mn/W(001) magnetic bilayers from first principles
• Spin-Transfer Torque in Helical Spin-Density Waves
• Current-induced sliding motion in a helimagnet MnAu${}_2$
• Strong Spin-Orbit Torque effect on magnetic defects due to topological surface state electrons in Bi${}_2$Te${}_3$