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In this paper we present detailed numerical simulation studies on the synchronization of two spin-torque nanooscillators (STNO) in the quasi-1D geometry: magnetization oscillations are induced in a thin NiFe nanostripe by a spin polarized…

介观与纳米尺度物理 · 物理学 2015-06-05 Dmitry V. Berkov

We study mutual synchronization in double nanoconstriction-based spin Hall nano-oscillators (SHNOs) under weak in-plane fields ($\mu_0H_\mathrm{IP}$ = 30-40 mT) and also investigate its angular dependence. We compare SHNOs with different…

We study the phenomenon of synchronization in pairs of doubly clamped, mechanically coupled silicon micro-oscillators. A continuous-wave laser beam is used to drive the micro-beams into limit cycle oscillations and to detect the…

斑图形成与孤子 · 物理学 2022-12-27 Aditya Bhaskar , Mark Walth , Richard H. Rand , Alan T. Zehnder

An array of spin torque oscillators (STOs) for practical applications such as pattern recognition was recently proposed, where several STOs are connected by a common nonmagnet. In this structure, in addition to the electric and/or magnetic…

介观与纳米尺度物理 · 物理学 2019-01-24 Tomohiro Taniguchi

The current controlled modulation of nano-contact based spin torque oscillator (STO) pairs is studied in both the synchronized and non-synchronized states. The synchronized state shows a well behaved modulation and demonstrates robust…

材料科学 · 物理学 2011-05-11 Ye. Pogoryelov , P. K. Muduli , S. Bonetti , E. Iacocca , Fred Mancoff , Johan Åkerman

Manipulating operation states of coupled spin-torque nano-oscillators (STNOs), including their synchronization, is essential for applications such as complex oscillator networks. In this work we experimentally demonstrate selective control…

介观与纳米尺度物理 · 物理学 2018-01-11 Yi Li , Xavier de Milly , Olivier Klein , Vincent Cros , Julie Grollier , Grégoire de Loubens

We study the propagation of a harmonic perturbation of small amplitude on a network of coupled identical phase oscillators prepared in a state of full synchronization. The perturbation is externally applied to a single oscillator, and is…

统计力学 · 物理学 2009-11-10 Damian H. Zanette

We have studied the dynamics of a spin-torque nanooscillator's (STNO) phase locked loop (PLL) generating microwave oscillations in a broad range of frequencies under the effect of direct current and external magnetic field. Bifurcations in…

混沌动力学 · 物理学 2016-11-18 Alexander A. Mitrofanov , Ansar R. Safin , Nicolay N. Udalov

A mutual synchronization of spin-torque oscillators coupled through current injection is studied theoretically. Models of electrical coupling in parallel and series circuits are proposed. Solving the Landau-Lifshitz-Gilbert equation,…

介观与纳米尺度物理 · 物理学 2017-12-14 Tomohiro Taniguchi , Sumito Tsunegi , Hitoshi Kubota

We investigate synchronization effects in quantum self-sustained oscillators theoretically using the micromaser as a model system. We use the probability distribution for the relative phase as a tool for quantifying the emergence of…

量子物理 · 物理学 2016-12-21 C. Davis-Tilley , A. D. Armour

We have simulated the non-linear dynamics of networks of spin-transfer oscillators. The oscillators are magnetically uncoupled but electrically connected in series. We use a modified Landau-Lifschitz- Gilbert equation to describe the motion…

材料科学 · 物理学 2009-11-11 J. Grollier , V. Cros , A. Fert

We study the response of an ensemble of synchronized phase oscillators to an external harmonic perturbation applied to one of the oscillators. Our main goal is to relate the propagation of the perturbation signal to the structure of the…

统计力学 · 物理学 2009-11-10 D. H. Zanette

Super-harmonic injection locking of single nano-contact (NC) spin-torque vortex oscillators (STVOs) subject to a small microwave current has been explored. Frequency locking was observed up to the fourth harmonic of the STVO fundamental…

材料科学 · 物理学 2016-09-14 P. S. Keatley , S. R. Sani , G. Hrkac , S. M. Mohseni , P. Dürrenfeld , J. Åkerman , R. J. Hicken

Mutually coupled spin Hall nano-oscillators (SHNO) can exhibit binarized phase state, offering pathways to realize Ising machines and efficient neuromorphic hardware. Conventionally, phase binarization is achieved in coupled SHNOs via…

介观与纳米尺度物理 · 物理学 2024-04-08 Sourabh Manna , Rohit Medwal , John Rex Mohan , Yasuhiro Fukuma , Rajdeep Singh Rawat

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…

介观与纳米尺度物理 · 物理学 2015-06-04 Mehrdad Elyasi , Charanjit S. Bhatia , Hyunsoo Yang

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…

介观与纳米尺度物理 · 物理学 2016-10-19 S. Urazhdin , V. E. Demidov , R. Cao , B. Divinskiy , V. Tyberkevych , A. Slavin , A. B. Rinkevich , S. O. Demokritov

Stochastic oscillators based on emerging nanodevices are attractive because of their ultra-low power requirement and ability to exhibit stochastic resonance, a phenomenon where synchronization to weak input signals is enabled due to ambient…

介观与纳米尺度物理 · 物理学 2024-06-19 Punyashloka Debashis , Aman K. Maskay , Pramey Upadhyaya , Zhihong Chen

Spin Hall oscillators (SHO) are promising candidates for the generation, detection and amplification of high frequency signals, that are tunable through a wide range of operating frequencies. They offer to be read out electrically,…

Synchronization of many coupled oscillators is widely found in nature and has the potential to revolutionize timing technologies. Here we demonstrate synchronization in arrays of silicon nitride micromechanical oscillators coupled purely…

介观与纳米尺度物理 · 物理学 2015-10-21 Mian Zhang , Shreyas Shah , Jaime Cardenas , Michal Lipson

We make a short review about the synchronization in coupled phase oscillator models. Next, we study the common-noise-induced synchronization among active rotators. At an intermediate noise strength, the noise-induced synchronization takes…

适应与自组织系统 · 物理学 2015-05-13 Hidetsugu Sakaguchi