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|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|
|Type:||Articles in periodicals and books|
|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 Directorate:||Nuclear Safety and Security|
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