Integrating all-optical switching with spintronics

Abstract

All-optical switching (AOS) of magnetic materials describes the reversal of the magnetization using short (femtosecond) laser pulses, and has been observed in a variety of materials. In the past decade it received extensive attention due to its high potential for fast and energy-efficient data writing in future spintronic memory applications. Unfortunately, the AOS mechanism in the ferromagnetic multilayers commonly used in spintronics needs multiple pulses for the magnetization reversal, losing its speed and energy efficiency. Here, we experimentally demonstrate `on-the-fly' single-pulse AOS in combination with spin Hall effect (SHE) driven motion of magnetic domains in Pt/Co/Gd synthetic-ferrimagnetic racetracks. Moreover, using field-driven-SHE-assisted domain wall (DW) motion measurements, both the SHE efficiency in the racetrack is determined and the chirality of the optically written DW's is verified. Our experiments demonstrate that Pt/Co/Gd racetracks facilitate both single-pulse AOS as well as efficient SHE induced domain wall motion, which might ultimately pave the way towards integrated photonic memory devices.

References in corpus (8)

• Current-driven dynamics of chiral ferromagnetic domain walls
• All-optical control of ferromagnetic thin films and nanostructures
• Fast domain wall motion induced by antiferromagnetic spin dynamics at the angular momentum compensation temperature of ferrimagnets
• Determination of the Spin-Hall-Effect-Induced and the Wedged-Structure-Induced Spin Torque Efficiencies in Heterostructures with Perpendicular Magnetic Anisotropy
• Two types of all-optical magnetization switching mechanisms using femtosecond laser pulses
• Hot electron driven enhancement of spin-lattice coupling in 4f ferromagnets observed by femtosecond x-ray magnetic circular dichroism
• Very large domain wall velocities in Pt/Co/Gd trilayers with Dzyaloshinskii-Moriya interaction
• Interfacial current-induced torques in Pt/Co/GdOx

Cited by in corpus (26)

• Single pulse all-optical toggle switching of magnetization without Gd: The example of Mn2RuxGa
• Comparing all-optical switching in synthetic-ferrimagnetic multilayers and alloys
• Laser-induced topological spin switching in a 2D van der Waals magnet
• Picosecond Switching of Optomagnetic Tunnel Junctions
• Spin Dynamics in van der Waals Magnetic Systems
• Deterministic all-optical magnetization writing facilitated by non-local transfer of spin angular momentum
• Unifying femtosecond and picosecond single-pulse magnetic switching in GdFeCo
• Unveiling domain wall dynamics of ferrimagnets in thermal magnon currents: competition of angular momentum transfer and entropic torque
• Emergence of Transient Domain Wall Skyrmions after Ultrafast Demagnetisation
• Universal criteria for single femtosecond pulse ultrafast magnetization switching in ferrimagnets
• Enhanced all-optical switching and domain wall velocity in annealed synthetic-ferrimagnetic multilayers
• Influence of magnetic fields on ultrafast laser-induced switching dynamics in Co/Gd bilayers
• Applications of Nanomagnets as Dynamical Systems
• Domain wall dynamics due to femtosecond laser-induced superdiffusive spin transport
• Magnetoplasmonic properties of perpendicularly magnetized $[$Co/Pt${]}_N$ nanodots
• Plasmon-enhanced optical control of magnetism at the nanoscale via the inverse Faraday effect
• Single-pulse all-optical switching in amorphous Dy${}_x$Co${}_{1-x}$ and Tb${}_x$Co${}_{1-x}$
• All-optical switching of magnetic domains in Co/Gd heterostructures with Dzyaloshinskii-Moriya Interaction
• Enhancing All-Optical Switching of Magnetization by He Ion Irradiation
• Ultra-low energy threshold engineering for all-optical switching of magnetization in dielectric-coated Co/Gd based synthetic-ferrimagnet
• Magnetostatics of Room Temperature Compensated Co/Gd/Co/Gd-based Synthetic Ferrimagnets
• Atomistic spin model of single pulse toggle switching in Mn${}_2$Ru${}_x$Ga Heusler alloys
• Influence of interlayer exchange coupling on ultrafast laser-induced magnetization reversal in ferromagnetic spin valves
• Exploring terahertz-scale exchange resonances in synthetic ferrimagnets with ultrashort optically induced spin currents
• Aging and passivation of magnetic properties in Co/Gd bilayers
• Electric bias-controlled switching of magnetization of ferrimagnetically coupled Mn delta-layers in a GaAs-AlGaAs quantum well