Probing electronic correlations in actinide materials using multipolar transitions
J. A. Bradley,J. A. Bradley,Subhra Sen Gupta,Gerald T. Seidler,Kevin T. Moore,Maurits W. Haverkort,George A. Sawatzky,S. D. Conradson,David Clark,Stosh A. Kozimor,Kevin S. Boland +10 more
Reads0
Chats0
TLDR
In this paper, nonresonant inelastic x-ray scattering from the semicore 5d levels of several actinide compounds is reported, and the authors demonstrate sensitivity to the neighboring electronic environment, such is needed to address longstanding questions of electronic localization and bonding in 5f compounds.Abstract:
We report nonresonant inelastic x-ray scattering from the semicore 5d levels of several actinide compounds. Dipole-forbidden, high-multipole features form a rich bound-state spectrum dependent on valence electron configuration and spin-orbit and Coulomb interactions. Cross-material comparisons, together with the anomalously high Coulomb screening required for agreement between atomic-multiplet theory and experiment, demonstrate sensitivity to the neighboring electronic environment, such as is needed to address longstanding questions of electronic localization and bonding in 5f compounds.read more
Citations
More filters
Journal ArticleDOI
Covalency in lanthanides. An X-ray absorption spectroscopy and density functional theory study of LnCl6(x-) (x = 3, 2).
Matthias W. Löble,Jason M. Keith,Jason M. Keith,Alison B. Altman,S. Chantal E. Stieber,Enrique R. Batista,Kevin S. Boland,Steven D. Conradson,David Clark,Juan S. Lezama Pacheco,Stosh A. Kozimor,Richard L. Martin,Stefan G. Minasian,Angela C. Olson,Brian L. Scott,David K. Shuh,Tolek Tyliszczak,Marianne P. Wilkerson,Ralph A. Zehnder +18 more
TL;DR: Surprising 4f- and 5d-orbital participation in covalent bonding is presented in the context of recent studies on both tetravalent transition metal and actinide hexahalides, MCl6(2-) (M = Ti, Zr, Hf, U).
Journal ArticleDOI
Synthesis, characterization, and multielectron reduction chemistry of uranium supported by redox-active α-diimine ligands.
Steven J. Kraft,Ursula J. Williams,Scott R. Daly,Eric J. Schelter,Stosh A. Kozimor,Kevin S. Boland,James M. Kikkawa,William P. Forrest,Christin N. Christensen,Daniel E. Schwarz,Phillip E. Fanwick,David Clark,S. D. Conradson,Suzanne C. Bart +13 more
TL;DR: Characterization by electronic absorption spectroscopy shows weak, sharp transitions in the near-IR region of the spectrum and, in combination with the crystallographic data, is consistent with the formulation that tetravalent uranium ions are present and supported by ene-diamide ligands.
Journal ArticleDOI
A high resolution and large solid angle x-ray Raman spectroscopy end-station at the Stanford Synchrotron Radiation Lightsource
Dimosthenis Sokaras,Dennis Nordlund,Tsu-Chien Weng,R. Alonso Mori,P. Velikov,D. Wenger,A. Garachtchenko,M. George,V. Borzenets,B. Johnson,Q. Qian,T. Rabedeau,Uwe Bergmann +12 more
TL;DR: These features exceed the specifications of currently existing relevant instrumentation, opening new opportunities for the routine application of this photon-in/photon-out hard x-ray technique to emerging research in multidisciplinary scientific fields, such as energy-related sciences, material sciences, physical chemistry, etc.
Journal ArticleDOI
Probing the 5f Orbital Contribution to the Bonding in a U(V) Ketimide Complex
TL;DR: The crystal field splitting parameters of the f orbitals were determined, allowing us to estimate the amount of f orbital participation in the bonding of 4.
Journal ArticleDOI
Emission spectroscopy of uranium(IV) compounds: a combined synthetic, spectroscopic and computational study
Emtithal Hashem,Adam N Swinburne,Carola Schulzke,Rachel C. Evans,James Alexis Platts,Andrew Kerridge,Louise S. Natrajan,Robert J. Baker +7 more
TL;DR: In this article, the emission spectral fingerprint of simple coordination compounds of Oh, C4v and C2v symmetry is used as a diagnostic tool to assign U(IV) species in solution and by inference, in the presence of [UO2]2+.
References
More filters
Journal ArticleDOI
Effects of Configuration Interaction on Intensities and Phase Shifts
TL;DR: In this paper, a theoretical analysis of the shape of the 2s2p^{1}P resonance of He observed in the inelastic scattering of electrons is presented. But the analysis is restricted to the case of one discrete level with two or more continua and of a set of discrete levels with one continuum.
Reference BookDOI
Core level spectroscopy of solids
Frank M. F. de Groot,Akio Kotani +1 more
TL;DR: In this article, a detailed overview of core level spectroscopies can be found, including XPS and XAS spectra, as well as a comparison of the two spectra with single electron excitation models.
Journal ArticleDOI
Superconducting and magnetic transitions in the heavy-fermion system URu2Si2.
Thomas Palstra,A.A. Menovsky,J. van den Berg,A.J. Dirkmaat,P.H. Kes,G.J. Nieuwenhuys,J. A. Mydosh +6 more
TL;DR: Susceptibility, magnetization, and specific-heat measurements on single-crystal samples indicate both a magnetic phase transition at 17.5 K and a superconducting transition at 0.8 K.
Journal ArticleDOI
Nature of the 5f states in actinide metals
TL;DR: In this article, a review compiles and analyzes progress in the understanding of the electronic and magnetic structure of the $5f$ states in actinide metals, focusing on electron energy-loss spectroscopy and many-electron atomic spectral calculations.