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

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

doi:10.1103/PhysRevB.91.035117

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

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

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

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.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	91
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.91.035117
State	Published - Jan 14 2015

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10.1103/PhysRevB.91.035117

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@article{27a3686ac4cb4d52aab3c46edfbaa181,

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

abstract = "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.",

author = "M. Janoschek and D. Haskel and J. Fernandez-Rodriguez and \{Van Veenendaal\}, M. and J. Rebizant and Lander, \{G. H.\} and Zhu, \{J. X.\} and Thompson, \{J. D.\} and Bauer, \{E. D.\}",

year = "2015",

month = jan,

day = "14",

doi = "10.1103/PhysRevB.91.035117",

language = "English",

volume = "91",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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TY - JOUR

T1 - Ground-state wave function of plutonium in PuSb as determined via x-ray magnetic circular dichroism

AU - Janoschek, M.

AU - Haskel, D.

AU - Fernandez-Rodriguez, J.

AU - Van Veenendaal, M.

AU - Rebizant, J.

AU - Lander, G. H.

AU - Zhu, J. X.

AU - Thompson, J. D.

AU - Bauer, E. D.

PY - 2015/1/14

Y1 - 2015/1/14

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84921059460

U2 - 10.1103/PhysRevB.91.035117

DO - 10.1103/PhysRevB.91.035117

M3 - Article

SN - 1098-0121

VL - 91

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 3

ER -

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

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