Current driven magnetization dynamics in helical spin density waves

Details Current driven magnetization dynamics in helical spin density waves Current driven magnetization dynamics in helical spin density waves

2005-11-09

arxiv.org/abs/cond-mat/0511224v2

Phys. Rev. Lett. 96, 256601 (2006)

Physics

Condensed Matter

Materials Science

In the previous version of this paper was a small numerical mistake made when evaluating equation 3 and 9. The number of digit

Scientific paper

10.1103/PhysRevLett.96.256601

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.

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