Polarization of U 5f States in Uranium Multilayers
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.
SPRINGELL R.;
WILHELM F.;
ROGALEV A.;
STIRLING W. G.;
WARD R. C. C.;
WELLS M. R.;
LANGRIDGE S.;
ZOCHOWKSI S. W.;
LANDER G. H.;
2008-03-07
AMERICAN PHYSICAL SOC
JRC43880
1098-0121,
https://publications.jrc.ec.europa.eu/repository/handle/JRC43880,
10.1103/PhysRevB.77.064423,
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