Spin-transfer effects in MgO-based tunnel junctions with an out-of-plane free layer and an in-plane polarizer: Static states and steady-state precession

Author

Kowalska, E. ; Sluka, V. ; Fowley, C. ; Kakay, A. ; Aleksandrov, Y. ; Lindner, J. ; Fassbender, J. ; Deac, A.

Author_Institution

Inst. of Ion Beam Phys. & Mater. Res., Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

This paper aims to explore potential mechanisms for sustaining steady-state precession in MgO-based magnetic tunnel junctions (MTJ) with an in-plane polarizer and an out-of-plane free layer. The Landau-Lifshitz-Gilbert-Slonczewski equation is analytically and numerically solved for a nano-pillar MTJ with circular cross-section under constant perpendicular applied current and field. It is demonstrated that the spin torque angular asymmetry is sufficient to sustain the spin transfer torque-driven dynamics of spin-torque nano-oscillators.

Keywords

magnesium compounds; magnetic tunnelling; magnetoelectronics; oscillators; spin dynamics; Landau-Lifshitz-Gilbert-Slonczewski equation; MgO; in-plane polarizer; magnetic tunnel junctions; nanopillar MTJ; out-of-plane free layer; spin torque angular asymmetry; spin transfer torque-driven dynamics; spin-torque nanooscillators; static states; steady-state precession; IP networks; Magnetic tunneling; Magnetization; Resistance; Steady-state; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7156843

Filename

7156843