Ultrafast single-pulse all-optical switching in synthetic ferrimagnetic Tb/Co/Gd multilayers

Abstract

In this work, we investigate single-shot all-optical switching (AOS) in Tb/Co/Gd/Co/Tb multilayers in an attempt to establish AOS in synthetic ferrimagnets with high perpendicular magnetic anisotropy. In particular, we study the effect of varying Tb thicknesses to disentangle the role of the two rare earth elements. Even though the role of magnetic compensation has been considered to be crucial, we find that the threshold fluence for switching is largely independent of the Tb content. Moreover, we identify the timescale for the magnetization to cross zero to be within the first ps after laser excitation using time-resolved MOKE. We conclude that the switching is governed mostly by interactions between Co and Gd.

References in corpus (18)

• Light-induced magnetization reversal of high-anisotropy TbCo alloy films
• Hot electron driven enhancement of spin-lattice coupling in 4f ferromagnets observed by femtosecond x-ray magnetic circular dichroism
• Picosecond all-optical switching of magnetic tunnel junctions
• Comparing all-optical switching in synthetic-ferrimagnetic multilayers and alloys
• Blueprint for deterministic all-optical switching of magnetization
• The role of electron and phonon temperatures in the helicity-independent all-optical switching of GdFeCo
• Role of Element-Specific Damping on the Ultrafast, Helicity-Independent All-Optical Switching Dynamics in Amorphous (Gd,Tb)Co Thin Films
• Picosecond Switching of Optomagnetic Tunnel Junctions
• Magnetic and all-optical switching properties of amorphous Tb${}_x$Co${}_{100-x}$ alloys
• Roles of heating and helicity in ultrafast all-optical magnetization switching in TbFeCo
• Universal criteria for single femtosecond pulse ultrafast magnetization switching in ferrimagnets
• Design of an integrated hybrid plasmonic-photonic device for all-optical switching and reading of spintronic memory
• 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
• Single-pulse all-optical switching in amorphous Dy${}_x$Co${}_{1-x}$ and Tb${}_x$Co${}_{1-x}$
• Optical Reading of Nanoscale Magnetic Bits in an Integrated Photonic Platform
• Enhancing All-Optical Switching of Magnetization by He Ion Irradiation
• Optical Switching in Tb/Co-Multilayer Based Nanoscale Magnetic Tunnel Junctions

Cited by in corpus (1)

• Optical Switching in Tb/Co-Multilayer Based Nanoscale Magnetic Tunnel Junctions