Synchronization of spin-transfer torque oscillators by spin pumping, inverse spin Hall, and spin Hall effects

Journal Article · Sat Feb 14 00:00:00 EST 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4907914· OSTI ID:22413090

Elyasi, Mehrdad; Bhatia, Charanjit S.; Yang, Hyunsoo ^[1]

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1. Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576 (Singapore)

We have proposed a method to synchronize multiple spin-transfer torque oscillators based on spin pumping, inverse spin Hall, and spin Hall effects. The proposed oscillator system consists of a series of nano-magnets in junction with a normal metal with high spin-orbit coupling, and an accumulative feedback loop. We conduct simulations to demonstrate the effect of modulated charge currents in the normal metal due to spin pumping from each nano-magnet. We show that the interplay between the spin Hall effect and inverse spin Hall effect results in synchronization of the nano-magnets.

• OSTI ID: 22413090
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
ELECTRIC CURRENTS
FEEDBACK
HALL EFFECT
L-S COUPLING
MAGNETS
METALS
OSCILLATORS
PUMPING
SEMICONDUCTOR JUNCTIONS
SPIN
SYNCHRONIZATION
TORQUE