Ratchet Effect in Magnetization Reversal of Stoner Particles

Abstract

A new strategy is proposed aimed at substantially reducing the minimal magnetization switching field for a Stoner particle. Unlike the normal method of applying a static magnetic field which must be larger than the magnetic anisotropy, a much weaker field, proportional to the damping constant in the weak damping regime, can be used to switch the magnetization from one state to another if the field is along the motion of the magnetization. The concept is to constantly supply energy to the particle from the time-dependent magnetic field to allow the particle to climb over the potential barrier between the initial and the target states.

arXiv comment4 pages, 4 figures

References in corpus (6)

• Switching of magnetization by non-linear resonance studied in single nanoparticles
• Spin-transport in multi-terminal normal metal - ferromagnet systems with non-collinear magnetizations
• Phase Coherent Precessional Magnetization Reversal in Micro-scopic Spin Valve Elements
• Quasi ballistic magnetization reversal
• Fast magnetization switching of Stoner particles: A nonlinear dynamics picture
• The level shifting induced negative magnetoresistance in the nearest-neighbor hopping conduction

Cited by in corpus (26)

• Energy dissipation and switching delay in stress-induced switching of multiferroic devices in the presence of thermal fluctuations
• Magnetization reversal through synchronization with a microwave
• The theory of magnetic field induced domain-wall propagation in magnetic nanowires
• Theoretical limit of the minimal magnetization switching field and the optimal field pulse for Stoner particles
• Field-induced domain wall propagation velocity in magnetic nanowires
• Critical current under an optimal time-dependent polarization direction for Stoner particles in spin-transfer torque induced fast magnetization reversal
• Fast domain wall propagation under an optimal field pulse in magnetic nanowires
• Magnetic particle hyperthermia: Neel relaxation in magnetic nanoparticles under circularly polarized field
• Microwave-assisted switching of a nanomagnet: analytical determination of the optimal microwave field
• Magnetization switching by current and microwaves
• Polarization and magnetization dynamics of a field-driven multiferroic structure
• Magnetic particle hyperthermia: Power losses under circularly polarized field in anisotropic nanoparticles
• Resonant suppression of thermal stability of the nanoparticle magnetization by a rotating magnetic field
• Euler equation of the optimal trajectory for the fastest magnetization reversal of nano-magnetic structures
• Magnetization switching by microwaves synchronized in the vicinity of precession frequency
• On field-driven domain wall motion in compensated ferrimagnetic nanowires
• Optimal control of magnetization reversal in a monodomain particle by means of applied magnetic field
• Subnanosecond magnetization reversal of magnetic nanoparticle driven by chirp microwave field pulse
• Analytic treatment of the precessional (ballistic) contribution to the conventional magnetic switching
• Thermally assisted magnetization reversal of a magnetic nanoparticle driven by a down-chirp microwave field pulse
• Light emitting diodes of inverse spin valves
• Fast magnetization reversal of a magnetic nanoparticle induced by cosine chirp microwave field pulse
• Dancing Synchronization in Coupled Spin-Torque Nano-Oscillators
• Self-sustained current oscillations in spin-blockaded quantum dots
• Spin transfer torque enhancement in dual spin valve in the ballistic regime
• Shape anisotropy effect on magnetization reversal induced by linear down chirp pulse