Femtosecond X-ray magnetic circular dichroism absorption spectroscopy at an X-ray free electron laser

201662 citationsJournal Articlebronze Open Access

Authors

Daniel J. Higley · SLAC National Accelerator Laboratory

Konstantin Hirsch · SLAC National Accelerator Laboratory

Georgi L. Dakovski · SLAC National Accelerator Laboratory

Emmanuelle Jal · Menlo School

Edwin Yuan · SLAC National Accelerator Laboratory

Tianmin Liu · SLAC National Accelerator Laboratory

Alberto Lutman

Abstract

X-ray magnetic circular dichroism spectroscopy using an X-ray free electron laser is demonstrated with spectra over the Fe L(3,2)-edges. The high brightness of the X-ray free electron laser combined with high accuracy detection of incident and transmitted X-rays enables ultrafast X-ray magnetic circular dichroism studies of unprecedented sensitivity. This new capability is applied to a study of all-optical magnetic switching dynamics of Fe and Gd magnetic sublattices in a GdFeCo thin film above its magnetization compensation temperature.

Topics & Keywords

Magnetic properties of thin films Advanced X-ray Imaging Techniques Advanced Electron Microscopy Techniques and Applications

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: Review of Scientific Instruments

Volume 87, Issue 3, pp. 033110-033110

DOI: 10.1063/1.4944410

Field-Weighted Citation Impact: 5.50