Ground-state wave function of plutonium in PuSb as determined via x-ray magnetic circular dichroism

Janoschek, M.; Haskel, D.; Fernandez-Rodriguez, J.; van Veenendaal, M.; Rebizant, J.; Lander, G. H.; Zhu, J. -X.; Thompson, J. D.; Bauer, E. D.

doi:10.1103/PhysRevB.91.035117

Ground-state wave function of plutonium in PuSb as determined via x-ray magnetic circular dichroism

Journal Article · Wed Jan 14 00:00:00 EST 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.91.035117· OSTI ID:1193381

Janoschek, M. ^[1]; Haskel, D. ^[2]; Fernandez-Rodriguez, J. ^[3]; van Veenendaal, M. ^[3]; Rebizant, J. ^[4]; Lander, G. H. ^[4]; Zhu, J. -X. ^[1]; Thompson, J. D. ^[1]; Bauer, E. D. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Argonne National Lab. (ANL), Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
Institute for Transuranium Elements, Karlsruhe (Germany)

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 [μ_L = 2.8(1)μ_B/Pu] and spin moments [μ_S = –2.0(1)μ_B/Pu] of the Pu 5f electrons for the first time. 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 L_z and S_z 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. 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.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-06CH11357; AC52-06NA25396; FG02-03ER46097

OSTI ID:: 1193381

Alternate ID(s):: OSTI ID: 1181326
OSTI ID: 1392388

Report Number(s):: LA-UR--14-28452

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 3 Vol. 91; ISSN 1098-0121; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Probing Magnetism in the Vortex Phase of PuCoGa 5 by X-Ray Magnetic Circular Dichroism Magnani, N.; Eloirdi, R.; Wilhelm, F. Physical Review Letters, Vol. 119, Issue 15 https://doi.org/10.1103/physrevlett.119.157204	journal	October 2017

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