Journal Article

PUBDB-2017-08095

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Magnetic EXAFS

Schûtz, G.Extern* ; Ahlers, D.

1997
EDP Sciences Les Ulis

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Please use a persistent id in citations: doi:10.1051/jp4/1997008

Abstract: The occurrence of a magnetic contribution in the EXAFS regime is a complex problem but interesting phenomenon since it is expected to contain unique information on the magnetic short-range order. Experimental studies of the small effects with sufficient high accuracy are required to provide the possibility of a reliable data analysis and interpretation. This is often hampered by the occurence of strong magnetic multi-electron effects and low-frequent atomic contributions as well as the strongly enhanced magnetic multiple scattering. Concerning the theoretical treatment problems arise, because the spin-dependency has to be included correctly and spin-orbit and exchange interaction have to be treated on the same level especially for higher photo-electron energies. Here we try to show, that by introduction of an additive spin-dependent part of the complex scattering amplitude for a spin-polarized outgoing photo-electron wave a reasonable interpretation of the experimental data is possible in a first approximation. The results of systematic measurements demonstrate the potential of this method to study magnetic and crystallographic structures and the low-energy exchange scattering process even in a quantitative manner.

Note: F-Bereich; HASYLAB; no PDF-File

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Contributing Institute(s):

1. DESY Retrocat (DESY(-2012))

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Experiment(s):

1. No specific instrument

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Database coverage:
SCOPUS

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