Spin-transfer-driven nano-oscillators are equivalent to parametric resonators
نویسندگان
چکیده
منابع مشابه
Spin transfer nano-oscillators.
The use of spin transfer nano-oscillators (STNOs) to generate microwave signals in nanoscale devices has aroused tremendous and continuous research interest in recent years. Their key features are frequency tunability, nanoscale size, broad working temperature, and easy integration with standard silicon technology. In this feature article, we give an overview of recent developments and breakthr...
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We experimentally demonstrate a series of fractional synchronization regimes (Devil's staircase) in a spin-torque nano-oscillator driven by a microwave field. These regimes are characterized by rational relations between the driving frequency and the frequency of the oscillation. An analysis based on the phase model of auto-oscillator indicates that fractional synchronization becomes possible w...
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Due to their nonlinear properties, spin transfer nano-oscillators can easily adapt their frequency to external stimuli. This makes them interesting model systems to study the effects of synchronization and brings some opportunities to improve their microwave characteristics in view of their applications in information and communication technologies and/or to design innovative computing architec...
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The most promising approach to attain a narrow linewidth and a large output power simultaneously in spin torque oscillators is self-phase-locking of an array of oscillators. Two long range coupling mechanisms, magnetostatic interaction and self-induced current, are explored. Synchronization occurs with MR ratio ~ 14% and volume ~ 2.1 × 10(-5) μm(3) at room temperature for an experimental freque...
متن کاملAbstract Dynamical solitons in individual and mutually synchronized spin-torque and spin-hall effect driven nano-oscillators
Dynamical solitons in individual and mutually synchronized spin-torque and spin-hall effect driven nano-oscillators Prof. Johan Åkerman University of Gothenburg, Göteborg, Sweden Nano-contact spin-torque nano-oscillators (STNOs) and spin Hall effect nano-oscillators (SHNOs) provide excellent playgrounds for the study of highly non-linear and nanoscopic spin wave modes and phenomena. While origi...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2015
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.91.014411