@article{84fb9b6142a140bfbf37f8d1ed1da6f2,
title = "Single-shot multi-level all-optical magnetization switching mediated by Spin transport",
abstract = "All-optical ultrafast magnetization switching in magnetic material thin film without the assistance of an applied external magnetic field is explored for future ultrafast and energy-efficient magnetic storage and memories. It is shown that femtosecond (fs) light pulses induce magnetization reversal in a large variety of magnetic materials. However, so far, only GdFeCo-based ferri-magnetic thin films exhibit magnetization switching via a single optical pulseHere, the single-pulse switching of Co/Pt multilayers within a magnetic spin-valve structure ([Co/Pt]/Cu/GdFeCo) is demonstrated and four possible magnetic configurations of the spin valve can be accessed using a sequence of single fs light pulses. The experimental study reveals that the magnetization final state of the ferromagnetic [Co/Pt] layer is determined by spin-polar-ized currents generated by the light pulse interactions with the GdFeCo layer. This work provides an approach to deterministically switch ferromagnetic layers and a pathway to engineering materials for opto-magnetic multi-bit recording.",
keywords = "All-optical magnetization switching, Magnetic recording, Ultrafast transfer of angular momentum",
author = "Satoshi Iihama and Yong Xu and Marwan Deb and Gr{\'e}gory Malinowski and Michel Hehn and Jon Gorchon and Fullerton, {Eric E.} and St{\'e}phane Mangin",
note = "Funding Information: S.I. thanks the Japan Society for the Promotion of Science (JSPS) for a Grant-in-Aid for JSPS Fellows (28-7881). All the authors thank Crosby Chang and Stephane Suire for their assistance of SQUID-VSM measurement. This work was supported by the ANR-NSF Project, ANR-13-IS04-0008-01, COMAG, ANR-15-CE24-0009 UMAMI, and by the ANR-Labcom Project LSTNM, by the Institut Carnot ICEEL for the project « Optic-switch » and Matelas and by the French PIA project “Lorraine Universit{\'e} d{\textquoteright}Excellence,” reference ANR-15-IDEX-04-LUE. Experiments were performed using equipment from the TUBE. Davm funded by FEDER (EU), ANR, R{\'e}gion Grand Est, and Metropole Grand Nancy. Funding Information: S.I. thanks the Japan Society for the Promotion of Science (JSPS) for a Grant-in-Aid for JSPS Fellows (28-7881). All the authors thank Crosby Chang and Stephane Suire for their assistance of SQUID-VSM measurement. This work was supported by the ANR-NSF Project, ANR-13-IS04-0008-01, COMAG, ANR-15-CE24-0009 UMAMI, and by the ANR-Labcom Project LSTNM, by the Institut Carnot ICEEL for the project ? Optic-switch ? and Matelas and by the French PIA project ?Lorraine Universit? d?Excellence,? reference ANR-15-IDEX-04-LUE. Experiments were performed using equipment from the TUBE. Davm funded by FEDER (EU), ANR, R?gion Grand Est, and Metropole Grand Nancy. Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",
year = "2018",
month = dec,
doi = "10.1002/adma.201804004",
language = "English",
volume = "30",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-Blackwell",
number = "51",
}