NDLI: Exchange coupling in the correlated electronic states of amorphous GdFe films

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Exchange coupling in the correlated electronic states of amorphous GdFe films

Content Provider	Semantic Scholar
Author	Elmers, H. J. Chernenkaya, A. S. Medjanik, Katerina Emmel, Markus Jakob, G. Schoenhense, Gerd
Copyright Year	2013
Abstract	The bulk sensitivity of hard x-ray photoelectron spectroscopy in combination with circularly polarized radiation of the P09 beamline at PETRA III enables the investigation of the magnetic properties of capped films. We have determined the temperature dependence of the magnetic circular dichroism in the Fe 2p and in the Gd 3d states in amorphous GdFe films. The magnetic dichroism reflects the stronger temperature dependence of Gd moments compared to Fe moments in agreement with mean-field models. We resolved the exchange split Gd 3d5/2 substates and found a significant temperature dependence of the splitting which is attributed to a temperature dependent part of the exchange energy caused by Stoner-like itinerant states. A comparison of experimental and simulated x-ray photoemission spectra with corresponding data for x-ray absorption spectroscopy exciting the identical core holes clearly demonstrates that the core hole exchange interaction is the origin of the observed multiplet features for Gd.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://bib-pubdb1.desy.de/record/155224/files/PhysRevB.88.174407.pdf
Language	English
Access Restriction	Open
Subject Keyword	Circular polarization Computed Tomography Scanning Systems Diagnostic radiologic examination Field electron emission Gadolinium DTPA Iron Magnetic circular dichroism Maxillary right second molar prosthesis Multiplet Photoelectric effect Roentgen Rays X-Ray Photoelectron Spectroscopy
Content Type	Text
Resource Type	Article

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