Frequency shift keying by current modulation in a MTJ-based STNO with high data rate
arXiv:1707.04467 · doi:10.1063/1.4994892
Abstract
Spin torque nano-oscillators are nanoscopic microwave frequency generators which excel due to their large frequency tuning range and agility for amplitude and frequency modulation. Due to their compactness, they are regarded as suitable candidates for applications in wireless communications, where cost-effective and CMOS-compatible standalone devices are required. In this work, we study the ability of a magnetic-tunnel-junction (MTJ) based spin torque nano-oscillator to respond to a binary input sequence encoded in a square-shaped current pulse for its application as a frequency-shift-keying (FSK) based emitter. We demonstrate that below the limit imposed by the spin torque nano-oscillators intrinsic relaxation frequency, an agile variation between discrete oscillator states is possible. For this kind of devices, we demonstrate FSK up to data rates of 400 Mbps which is well suited for the application of such scillators in wireless networks.
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- Analog and digital phase modulation of spin torque nano-oscillators
- Ultra-fast GHz-range swept-tuned spectrum analyzer with 20 ns temporal resolution based on a spin-torque nano-oscillator with a uniformly magnetized 'free' layer
- Non-hermiticity in spintronics: oscillation death in coupled spintronic nano-oscillators through emerging exceptional points
- Synchronization properties and reservoir computing capability of hexagonal spintronic oscillator arrays
- Beyond the gyrotropic motion: dynamic C-state in vortex spin torque oscillators
- Influence of flicker noise and nonlinearity on the frequency spectrum of spin torque nano-oscillators
- Nanocontact vortex oscillators based on CoMnGe pseudo-spin valves
- Current-driven magnetization dynamics and their correlation with magnetization configurations in perpendicularly magnetized tunnel junctions
- Nonlinear spin dynamics of ferromagnetic ring in the vortex state and its application for spin-transfer nano-oscillator
- Simulation of current-driven magnetisation switching in nanopillars with Perpendicular Shape Anisotropy