Title: Polarization of U 5f States in Uranium Multilayers
Authors: SPRINGELL R.WILHELM F.ROGALEV A.STIRLING W. G.WARD R. C. C.WELLS M. R.LANGRIDGE S.ZOCHOWKSI S. W.LANDER G. H.
Citation: PHYSICAL REVIEW B vol. 77 p. 064423
Publisher: AMERICAN PHYSICAL SOC
Publication Year: 2008
JRC Publication N°: JRC43880
ISSN: 1098-0121
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC43880
DOI: 10.1103/PhysRevB.77.064423
Type: Articles in Journals
Abstract: X-ray magnetic circular dichroism XMCD measurements were performed at the U M4,5 edges for U/ Fe, U/Co, U/ Ni, and U/Gd multilayers. In the case of the U/Fe system, a significant polarization of the U 5f electrons was found, but not for U/Co or U/Ni multilayers. We ascribe this to a hybridization of U 5f and Fe 3d states, which overlap in energy near the Fermi level. In the U/Gd system, the XMCD signals were small and yielded magnetic moments of order 0.02B. The spatial extent of the U 5f polarization is different from that of the U/Fe system and is oscillatory, extending into the center of the U layers.
JRC Institute:Institute for Transuranium Elements

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