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

X-ray magnetic circular dichroism spectroscopy using an X-ray free electron laser is demonstrated with spectra over the Fe L{sub 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...

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Veröffentlicht in:	Review of scientific instruments 2016-03, Vol.87 (3)
Hauptverfasser:	Higley, Daniel J., Yuan, Edwin, Department of Applied Physics, Stanford University, Stanford, California 94305, Hirsch, Konstantin, Dakovski, Georgi L., Jal, Emmanuelle, Lutman, Alberto A., Coslovich, Giacomo, Hart, Philip, Hoffmann, Matthias C., Mitra, Ankush, Moeller, Stefan, Ohldag, Hendrik, Seaberg, Matthew, Stöhr, Joachim, Nuhn, Heinz-Dieter, Reid, Alex H., Dürr, Hermann A., Schlotter, William F., Liu, Tianmin, MacArthur, James P., Department of Physics, Stanford University, Stanford, California 94305
Format:	Artikel
Sprache:	eng
Schlagworte:	ABSORPTION ABSORPTION SPECTROSCOPY ACCURACY BRIGHTNESS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ELECTRONS FREE ELECTRON LASERS GADOLINIUM INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY IRON MAGNETIC CIRCULAR DICHROISM MAGNETIZATION SENSITIVITY SPECTRA THIN FILMS X RADIATION
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Zusammenfassung:	X-ray magnetic circular dichroism spectroscopy using an X-ray free electron laser is demonstrated with spectra over the Fe L{sub 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.
ISSN:	0034-6748 1089-7623
DOI:	10.1063/1.4944410