Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2389767
