Mutual synchronization of nano-oscillators driven by pure spin current

Abstract

We report the experimental observation of mutual synchronization of magnetic nanooscillators driven by pure spin current generated by nonlocal spin injection. We show that the oscillators efficiently synchronize due to the direct spatial overlap of the dynamical modes excited by spin current, which is facilitated by the large size of the auto-oscillation area inherent to these devices. The synchronization occurs within an interval of the driving current determined by the competition between the dynamic nonlinearity that facilitates synchronization, and the short-wavelength magnetic fluctuations enhanced by the spin current that suppress synchronization. The demonstrated synchronization effects can be utilized to control the spatial and spectral characteristics of the dynamical states induced by spin currents.

arXiv comment15 pages, 5 figures

References in corpus (7)

• Spin Hall effect
• Magnetic oscillations driven by the spin Hall effect in 3-terminal magnetic tunnel junction devices
• Generation of coherent spin-wave modes in Yttrium Iron Garnet microdiscs by spin-orbit torque
• Nanowire Spin Torque Oscillator Driven by Spin Orbit Torques
• Spectral Characteristics of the Microwave Emission by the Spin Hall Nano-Oscillator
• Dynamical Skyrmion State in a Spin Current Nano-Oscillator with Perpendicular Magnetic Anisotropy
• Intrinsic synchronization of an array of spin-torque oscillators driven by the spin-Hall effect

Cited by in corpus (5)

• An Introduction to Spin Wave Computing
• Magnetization oscillations and waves driven by pure spin currents
• Dynamical mode coupling and coherence in spin Hall nano-oscillator with perpendicular magnetic anisotropy
• Synchronized, periodic, and chaotic dynamics in spin torque oscillator with two free layers
• Spin-current driven spontaneous coupling of ferromagnets