New Nano Letter “Engineering Single-Shot All-Optical Switching of Ferromagnetic Materials”

Published by Stephane Mangin on November 24, 2020November 24, 2020

Thanks to the strong collaboration between Tohoku University,  we investigated single-shot all-optical magnetization switching in a GdFeCo/Cu/[Co_xNi_1–x/Pt] spin-valve structure. We demonstrated that the threshold fluence for switching both the GdFeCo and the ferromagnetic layer depends on the laser pulse duration and the thickness and the Curie temperature of the ferromagnetic layer. We are able to explain most of the experimental results using a phenomenological model. This work provides a way to engineer ferromagnetic materials for energy efficient single-shot all-optical magnetization switching.

Junta Igarashi et al, Nano Lett. 2020