Spin Dynamics in Magnetic Heterostructures Driven by Current-Induced Spin-Orbit Torques

• Authors: N. Kulagin , V. Korneev , A. Popkov , G. Demin
• Languages of publication: EN

Abstracts

EN

In this work it is shown that in magnetic heterostructure with the structural inversion symmetry due to the presence of the Rashba effective field responsible for the effects of spin-orbit scattering, the spin dynamics in the magnetic layer is described by a modified system of coupled equations for the exchange-coupled localized spins and spin accumulation. As a result, this system is reduced to an effective Landau-Lifshitz equation for the total magnetization with the additional torques which act similarly to the spin transfer torque in magnetic tunnel junction. Based on these equations, we calculated numerically the field dependences of the switching current density for the different magnetization geometries, in particular for that was used in work of Miron et al., which are in a good agreement with the experimental results for the reasonable fitting parameters.

Keywords

EN

75.70.Tj; 75.78.-n

Discipline

• 75.78.-n: Magnetization dynamics
• 75.70.Tj: Spin-orbit effects(see also 71.70.Ej Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 463-465

Dates

published

2015-02

Contributors

author

N. Kulagin

• Moscow State Aviation Technological University, Orshanskaya str. 3, Moscow, Russia

author

V. Korneev

• National Research University of Electronic Technology, pas. 4806, bld. 5, Zelenograd, Moscow, Russia

author

A. Popkov

• National Research University of Electronic Technology, pas. 4806, bld. 5, Zelenograd, Moscow, Russia

author

G. Demin

• National Research University of Electronic Technology, pas. 4806, bld. 5, Zelenograd, Moscow, Russia

References

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Identifiers

DOI

10.12693/APhysPolA.127.463