Magnetic circular dichroism in x-ray resonant Raman scattering in perpendicular geometry fromCoFe2O4and Co metal: A comparison of valence and inner-shell channels
作者： L. Braicovich , G. van der Laan , G. Ghiringhelli , A. Tagliaferri , N. B. Brookes
DOI: 10.1103/PHYSREVB.66.174435
关键词: Photon energy 、 Magnetic circular dichroism 、 Vibrational circular dichroism 、 X-ray magnetic circular dichroism 、 Raman scattering 、 Circular dichroism 、 Dichroism 、 Linear dichroism 、 Geometry 、 Physics
摘要: We present results on resonant Raman scattering (RRS) in perpendicular geometry excited with circularly polarized x rays at the Co L 3 , 2 edges CoFe O 4 (Co ferrite) and metal. In this incident x-ray beam is to magnetization magnetic dichroism only RRS not absorption. compare 3s-RRS channel terminating an inner shell 3s hole extra 3d electron (2p 6 n →2p 5 + 1 ) 3d-RRS ending a electron-hole pair → 2p ). The work based measurement of spectra vs photon energy integrated over scattered energy. both samples inner-shell about order magnitude larger than that valence channel. result explained by theory fast-collision approximation. show provides general way choose optimum study geometry. impact briefly discussed.
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