Synchronization of Spin Torque Nano-Oscillators in a Parallel Circuit: Effects of Direct Electrical Coupling Between Free Layers

Author

Doohyung Kang ; Mincheol Shin

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

Volume

51

Issue

7

fYear

2015

fDate

Jul-15

Firstpage

1

Lastpage

4

Abstract

The synchronization of spin torque nano-oscillators (STNOs) is studied by the parallel circuit model for the giant magnetoresistance pillar. Employing a macrospin simulation approach, we obtain a synchronization range in the plane of the frequency and the resistance for various capacitances. The region of the synchronization is found to be extended by introducing capacitors and to be robust against magnetic anisotropy field fluctuations. We discuss calculated results to improve the synchronization between STNOs.

Keywords

capacitors; coupled circuits; magnetic anisotropy; magnetic fields; magnetoresistance; nanoelectronics; oscillators; spin fluctuations; synchronisation; STNO; capacitors; direct electrical coupling; macrospin simulation approach; magnetic anisotropy field fluctuations; magnetoresistance pillar; parallel circuit model; spin torque nanooscillators; Capacitors; Couplings; Integrated circuit modeling; Magnetic anisotropy; Oscillators; Synchronization; Torque; Spin torque nano-oscillator (STNO); spin torque nano-oscillator; synchronization;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2389767

Filename

7004083