Journal Article

PreJuSER-978

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Resonant magnetic x-ray scattering from terbium

Strempfer, J. ; Hupfeld, D.FZJ* ; Voigt, J.FZJ* ; Bihlmayer, G.FZJ* ; Goldman, A. I. ; Brückel, T.FZJ*

2008
IOP Publ. Bristol

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Please use a persistent id in citations: http://hdl.handle.net/2128/22950  doi:10.1088/0953-8984/20/44/445208

Abstract: Resonant magnetic x-ray scattering from Tb in the spiral phase is studied in great detail. Polarization analysis in the sigma-sigma' and sigma-pi' channels has been performed for magnetic (0, 0, l +/- tau) satellite reflections over the accessible wavevector range Q = 1.9-6.5 angstrom(-1). A characteristic splitting of the resonance signal as a function of energy has been observed at the L-II as well as at the L-III absorption edge. The shape of the resonance depends on Q and is different for the two edges. Up to three components were observed with a separation in energy between 3.3 and 4.9 eV, compared to a core hole lifetime broadening of 2.5 eV, which is in agreement with the density of states in Tb metal.

Keyword(s): J

Note: We would like to thank K Attenkofer for fruitful discussions. Work at BESSRC-CAT and use of the Advanced Photon Source was supported by the US Department of Energy, Basic Energy Sciences, Office of Science, Division of Materials Sciences, under contract no. W-31-109-Eng-38 and the State of Illinois under HECA. The Midwest Universities Collaborative Access Team ( MUCAT) sector at the APS is supported by the US Department of Energy, Basic Energy Sciences, Office of Science, through the Ames Laboratory under contract no. W7405-Eng-82. This work has been supported by the BMBF (German Federal Ministry for Education and Research) under contract 05 NA8CJA 8.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)
2. Streumethoden (IFF-4)
3. Neutronenstreuung (IFF-5)
4. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
5. JCNS (Jülich Centre for Neutron Science JCNS (JCNS) ; JCNS)

Research Program(s):

1. Kondensierte Materie (P54)
2. Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) (P55)

Appears in the scientific report 2008

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