Physics of the Solid State
Volumes and Issues
Impact of the mutual direction of Polarizer and Free Layer on the auto-oscillation mode of magnetic tunnel junctions (MTJs) of different geometry
Kikteva V. R.1,2, Kiseleva K. V.1,3, Kichin G. A.1,4, Skirdkov P. N. 1,4,5, Zvezdin K. A. 1,5,4
1New spintronic technologies, Moscow, Russia
2Bauman Moscow State Technical University, Moscow, Russia
3Skolkovo Institute of Science and Technology, Skolkovo Innovation Centre, Moscow, Russia
4MIPT, Dolgoprudny, Moscow , Russia
5Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
Email: kiktevavera@mail.ru, kseniia.kiseleva@scoltech.ru, konstantin.zvezdin@gmail.com

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In this work we studied the auto-oscillation mode of structures based on magnetic tunnel junctions. During the experiment we studied how different values and orientation of the magnetic field affect the efficiency of the auto-oscillations regime for samples of various shapes. The auto-oscillation mode in samples was observed near the transition from one state of magnetization of the free layer to another. It was found that the maximum value of the power spectral density and its position relative to the frequency axis can be controlled by changing the magnitude and orientation of the external magnetic field. Keywords: Magnetic tunnel junction (MTJ), auto-oscillations, power spectral density, nanooscillator.
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