Ground-state wave function of Plutonium in PuSb as determined via X-ray magnetic circular dichroism
Measurements of x-ray magnetic circular dichroism (XMCD) and x-ray absorption near-edge structure (XANES) spectroscopy at the Pu M4,5 edges of the ferromagnet PuSb are reported. Using bulk magnetization measurements and a sum rule analysis of the XMCD spectra, we determine the individual orbital [μL = 2.8(1)μB/Pu] and spin moments [μS = −2.0(1)μB/Pu] of the Pu 5f electrons. Atomic multiplet calculations of
the XMCD and XANES spectra reproduce well the experimental data and are consistent with the experimental value of the spin moment. These measurements of Lz and Sz are in excellent agreement with the values that have been extracted from neutron magnetic form factor measurements, and confirm the local character of the 5f electrons in PuSb. Finally, we demonstrate that a split M5 as well as a narrow M4 XMCD signal may serve as a signature of 5f electron localization in actinide compounds.
JANOSCHEK M.;
HASKEL D.;
FERNANDEZ-RODRIGUEZ J.;
VAN VEENENDAAL M.;
REBIZANT J.;
LANDER G.H;
ZHU J.X.;
THOMPSON J. D.;
BAUER E.D.;
2015-01-19
AMER PHYSICAL SOC
JRC92347
1098-0121,
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.035117,
https://publications.jrc.ec.europa.eu/repository/handle/JRC92347,
10.1103/PhysRevB.91.035117,
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