Temperature dependence of spin-transfer-induced switching of nanomagnets

Abstract

We measure the temperature, magnetic-field, and current dependence for the switching of nanomagnets by a spin-polarized current. Depending on current bias, switching can occur between either two static magnetic states or a static state and a current-driven precessional mode. In both cases, the switching is thermally activated and governed by the sample temperature, not a higher effective magnetic temperature. The activation barriers for switching between static states depend linearly on current, with a weaker dependence for dynamic to static switching.

arXiv comment4 pages, 4 figures

References in corpus (9)

• Microwave Oscillations of a Nanomagnet Driven by a Spin-Polarized Current
• Current-driven Magnetization Reversal and Spin Wave Excitations in Co/Cu/Co Pillars
• Direct-Current Induced Dynamics in Co90Fe10/Ni80Fe20 Point Contacts
• Anatomy of Spin-Transfer Torque
• Thermally assisted magnetization reversal in the presence of a spin-transfer torque
• Magnetization dynamics with a spin-transfer torque
• Current-Driven Magnetic Excitations in Permalloy-Based Multilayer Nanopillars
• Thermally-Activated Magnetic Reversal Induced by a Spin-Polarized Current
• Current-induced two-level fluctuations in pseudo spin-valves (Co/Cu/Co) nanostructures

Cited by in corpus (51)

• Spin torque switching with the giant spin Hall effect of tantalum
• Spin Transfer Torques
• Spin torque building blocks
• Stochastic p-bits for Invertible Logic
• Macrospin Models of Spin Transfer Dynamics
• Nanowire Spin Torque Oscillator Driven by Spin Orbit Torques
• Magnetoresistance and spin-transfer torque in magnetic tunnel junctions
• Spin-Torque Driven Magnetization Dynamics: Micromagnetic Modelling
• Spin-torque switching: Fokker-Planck rate calculation
• Magnetization oscillations and waves driven by pure spin currents
• Adjustable spin torque in magnetic tunnel junctions with two fixed layers
• Mechanisms limiting the coherence time of spontaneous magnetic oscillations driven by DC spin-polarized currents
• Large-amplitude coherent spin waves exited by spin-polarized current in nanoscale spin valves
• Spin torque, tunnel-current spin polarization and magnetoresistance in MgO magnetic tunnel junctions
• Stochastic resonance of a nanomagnet excited by spin transfer torque
• Spin-Transfer Excitations of Permalloy Nanopillars for Large Applied Currents
• Current-Induced Effective Magnetic Fields in Co/Cu/Co Nanopillars
• Thermal Relaxation Rates of Magnetic Nanoparticles in the Presence of Magnetic Fields and Spin-Transfer Effects
• Thermal Effects on the Magnetic Field Dependence of Spin Transfer Induced Magnetization Reversal
• Parametric excitation of a magnetic nanocontact by a microwave field
• Time-Domain Studies of Very-Large-Angle Magnetization Dynamics Excited by Spin Transfer Torques
• Time-Resolved Spin Torque Switching and Enhanced Damping in Py/Cu/Py Spin-Valve Nanopillars
• Critical Current Distribution in Spin Transfer Switched Magnetic Tunnel Junctions
• Non-Local Transport Mediated by Spin-Supercurrents
• Micromagnetic understanding of stochastic resonance driven by spin-transfertorque
• Resonant Spin-Transfer-Driven Switching of Magnetic Devices Assisted by Microwave Current Pulses
• Thermally-Assisted Spin-Transfer Torque Dynamics in Energy Space
• Spin-Torque-Induced Rotational Dynamics of a Magnetic Vortex Dipole
• Spin Torque Oscillators with Thermal Noise: A Constant Energy Orbit Approach
• Immunity of nanoscale magnetic tunnel junctions to ionizing radiation
• Effective temperature and Gilbert damping of a current-driven localized spin
• Sub-ns spin-transfer switching: compared benefits of free layer biasing and pinned layer biasing
• Averaged equation for energy diffusion on a graph reveals bifurcation diagram and thermally assisted reversal times in spin-torque driven nanomagnets
• Magnetization switching by current and microwaves
• Switching barrier scaling near bifurcation points for non-Gaussian noise
• Current induced transverse spin-wave instability in thin ferromagnets: beyond linear stability analysis
• Intrinsic synchronization of an array of spin-torque oscillators driven by the spin-Hall effect
• Thermal effects in spin torque switching of perpendicular magnetic tunnel junctions at cryogenic temperatures
• Spin-torque effects in thermally assisted magnetization reversal: Method of statistical moments
• Spin-transfer assisted thermally activated switching distributions in perpendicularly magnetized spin valve nanopillars
• Comparison between thermal and current driven spin-transfer torque in nanopillar metallic spin valves
• Magnetization reversal driven by spin-injection : a mesoscopic spin-transfer effect
• Micromagnetic study of electrical-field-assisted magnetization switching in MTJ devices
• Peculiarities of the stochastic motion in antiferromagnetic nanoparticles
• Observation of anomalous non-Ohmic transport in current-driven nanostructures
• Electrically Tunable Picosecond-scale Octupole Fluctuations in Chiral Antiferromagnets
• Thermal Dynamics in Symmetric Magnetic Nanopillars Driven by Spin Transfer
• Effect of spin diffusion on spin torque in magnetic nanopillars
• Damping dependence of spin-torque effects in thermally assisted magnetization reversal
• Optimal Control of Stochastic Magnetization Dynamics by Spin Current
• Spin-transfer torque effects in the dynamic forced response of the magnetization of nanoscale ferromagnets in superimposed ac and dc bias fields in the presence of thermal agitation