Synchronization of spin-transfer oscillators driven by stimulated microwave currents
By Julie Grollier, Olivier Boulle, Vincent Cros, A. Fert. IEEE International Magnetics Conference, 2005
222 citations recorded by the source corpus.
This article presents numerical simulations to study the synchronization of electrically connected STOs (spin transfer oscillators). The motion of the magnetizations mj of the layers F2 of a collection of different STOs were calculated. Each mj is considered as a macrospin without any dipolar interaction with the other mi. Its time evolution is given by a Landau-Lifschitz-Gilbert equation including a standard spin transfer term. The current through each junction is the sum of the injected dc current and the ac component due to the microwave current induced by the oscillations of all the other STOs. Simulations of the dynamics are performed using a fourth-order Runge-Kutta algorithm. It is shown that it is possible to synchronize a network of spin-transfer oscillators electrically connected to a load. The synchronization depends on the dispersion of the individual frequencies, on the coupling parameters and the delays induced by microwave cables in experimental setups. Under certain conditions, the synchronization can be complete.
Subfields: Atomic and Molecular Physics, and Optics, Computer Networks and Communications
View Paper: https://www.semanticscholar.org/paper/32ecb6309b94ab3fdacab4803385dc5be1c98ddc
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In Atomic and Molecular Physics, and Optics
- Albert Fert
- Vincent Cros
- A. Slavin
- V. Tiberkevich
- Nicolas Locatelli
- Anders Eklund
- Ahmad A. Awad
- Ana Rusu
In Computer Networks and Communications
Citations in the corpus
- Interface-Induced Phenomena in Magnetism (2016, unknown): “They confer spin-torque nano-oscillators with an ability to change frequency when current is varied, and also to self-synchronize by electrical [Grollier et al., 2006] or magnetic couplings [Sani et al.”
- Nonlinear Auto-Oscillator Theory of Microwave Generation by Spin-Polarized Current (2009, methodology): “Such a coupling mechanism between spin-torque oscillators has been recently considered theoretically in [104].”
- Spin-torque building blocks. (2014, background): “Similarly, spin-torque oscillators can self-synchronize when coupled via a mutual electrical [102] [103] [104] or magnetic interaction [85] [86] [105] (demonstrated for up to four oscillators).”
- Nobel Lecture: Origin, development, and future of spintronics (2008, methodology): “In our laboratory we are exploring theoretically and experimentally a concept of self-synchronization of a collection of electrically connected STOs by the rf current components they induce Grollier et al., 2006 .”
- Spin-Torque and Spin-Hall Nano-Oscillators (2015, background): “Synchronization of serially connected nanopillar STNOs using their shared microwave electric current [139] has been theoretically proposed, but to date has shown no clear success.”