Designing large arrays of interacting spin-torque nano-oscillators for microwave information processing
arXiv:1908.09908 · doi:10.1103/PhysRevApplied.13.024073
Abstract
Arrays of spin-torque nano-oscillators are promising for broadband microwave signal detection and processing, as well as for neuromorphic computing. In many of these applications, the oscillators should be engineered to have equally-spaced frequencies and equal sensitivity to microwave inputs. Here we design spin-torque nano-oscillator arrays with these rules and estimate their optimum size for a given sensitivity, as well as the frequency range that they cover. For this purpose, we explore analytically and numerically conditions to obtain vortex spin-torque nano-oscillators with equally-spaced gyrotropic oscillation frequencies and having all similar synchronization bandwidths to input microwave signals. We show that arrays of hundreds of oscillators covering ranges of several hundred MHz can be built taking into account nanofabrication constraints.
References in corpus (14)
- Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current
- Direct-Current Induced Dynamics in Co90Fe10/Ni80Fe20 Point Contacts
- Vowel recognition with four coupled spin-torque nano-oscillators
- Electric field control of deterministic current-induced magnetization switching in a hybrid ferromagnetic/ferroelectric structure
- Magnetic Vortex Core Dynamics in a Ferromagnetic Dot
- Stability of magnetic vortex in soft magnetic nano-sized circular cylinder
- Mutual synchronization of spin torque nano-oscillators through a non-local and tunable electrical coupling
- Impact of the electrical connection of N Spin Transfer Oscillators on their synchronization : an analytical study
- Spin torque resonant vortex core expulsion for an efficient radio-frequency detection scheme
- Understanding of phase noise squeezing under fractional synchronization of non-linear spin transfer vortex oscillator
- Non-uniformity of a planar polarizer as a reason of spin-transfer induced vortex oscillations at zero field
- Temperature dependence of microwave voltage emission associated to spin-transfer induced vortex oscillation in magnetic tunnel junction
- Low Power Microwave Signal Detection With a Spin-Torque Nano-Oscillator in the Active Self-Oscillating Regime
- Enhancing the injection locking range of spin torque oscillators through mutual coupling