Frequency enhancement and power tunability in tilted polarizer spin-torque nano oscillator
arXiv:2004.02659 · doi:10.1063/1.5143195
Abstract
In the absence of an applied magnetic field, a spin-torque nano oscillator(STNO) with a tilted polarizer is studied using numerical simulation of the associated Landau-Lifshitz-Gilbert-Slonczewski equation. We find considerable enhancement of frequency by tilting the polarizer out-of-plane appropriately. Also, we observe improved tunability of frequency of oscillations from 15 GHz to 75 GHz and increment in the power spectral density by current and tilt angle. In addition, our findings and insights pave a simple way for nanoscale level microwave generators to be implemented.
arXiv comment12 pages,7 figures, Accepted for publication in Journal of Applied Physics
References in corpus (21)
- Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current
- Spin Transfer Torques
- Direct-Current Induced Dynamics in Co90Fe10/Ni80Fe20 Point Contacts
- Magnetic vortex oscillator driven by dc spin-polarized current
- Bias-driven large power microwave emission from MgO-based tunnel magnetoresistance devices
- Synchronization of spin-transfer oscillators driven by stimulated microwave currents
- Spin Transfer Dynamics in Spin Valves with Out-of-plane Magnetized CoNi Free Layers
- Frequency Modulation of Spin-Transfer Oscillators
- Shaped angular dependence of the spin transfer torque and microwave generation without magnetic field
- Dynamics of two coupled vortices in a spin valve nanopillar excited by spin transfer torque
- Non-linear frequency and amplitude modulation of a nano-contact spin torque oscillator
- Phase locking of vortex based spin transfer oscillators to a microwave current
- Zero Field precession and hysteretic threshold currents in spin torque oscillators with tilted polarizer
- Numerical integration of the stochastic Landau-Lifshitz-Gilbert equation in generic time-discretisation schemes
- Self-Oscillation in Spin Torque Oscillator Stabilized by Field-like Torque
- Spin-torque driven magnetic vortex self-oscillations in perpendicular magnetic fields
- Mutual synchronization of spin-torque oscillators consisting of perpendicularly magnetized free layers and in-plane magnetized pinned layers
- Field-Free Synthetic-Ferromagnet Spin Torque Oscillator
- Synchronization of an array of spin torque nano oscillators in periodic applied external magnetic field
- Enhanced synchronization in an array of spin torque nano oscillators in the presence of oscillating external magnetic field
- Phase locking of spin transfer nano-oscillators using common microwave sources
Cited by in corpus (6)
- Field-free high-frequency exchange-spring spin-torque nano-oscillators
- On the origin of noncollinear magnetization coupling across RuX layers
- Large Amplitude Spin-Hall Oscillations due to Field-like Torque
- Flicker and random telegraph noise between gyrotropic and dynamic C-state of a vortex based spin torque nano oscillator
- Effect of interlayer exchange coupling in spin-torque nano oscillator
- Spin Torque Oscillations Triggered by In-plane Field