A perturbative approach to J mixing in f-electron systems: Application to actinide dioxides

Abstract

We present a perturbative model for crystal-field calculations, which keeps into account the possible mixing of states labelled by different quantum number J. Analytical J-mixing results are obtained for a Hamiltonian of cubic symmetry and used to interpret published experimental data for actinide dioxides. A unified picture for all the considered compounds is proposed by taking into account the scaling properties of the crystal-field potential.

arXiv comment16 pages + 4 figures; will appear http://prb.aps.org

References in corpus (3)

• Triple-q octupolar ordering in NpO_2
• S-mixing and quantum tunneling of the magnetization in molecular nanomagnets
• Localized 4f States and Dynamic Jahn-Teller Effect in PrO2

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• Crystal field and magnetic structure of UO${}_2$
• Multipolar, magnetic and vibrational lattice dynamics in the low temperature phase of uranium dioxide
• Synchrotron Radiation Techniques and their Application to Actinide Materials
• Non-magnetic ground state of PuO${}_2$
• Collective excitations in the tetravalent lanthanide honeycomb antiferromagnet, Na2PrO3
• On the Raman Spectrum of Plutonium dioxide: vibrational and crystal electric field modes
• Hidden order and multipolar exchange striction in a correlated f-electron system
• Advances in actinide thin films: synthesis, properties, and future directions
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• U 5$f$ crystal-field ground state of UO${}_2$ probed by directional dichroism in nonresonant inelastic x-ray scattering
• Microscopic analysis of multipole susceptibility of actinide dioxides: A scenario of multipole ordering in AmO${}_2$
• Self-consistent density functional calculations of the crystal field levels in lanthanide and actinide dioxides
• $\tilde{J}$-pseudospin states and the crystal field of cubic systems
• Magnetic behavior of curium dioxide with non-magnetic ground state
• Crystal-field effects competing with spin-orbit interactions in NaCeO${}_2$
• High-resolution valence band RIXS at the actinide M${}_{4,5}$-edges
• f-electron charge densities probed using core level non-resonant inelastic x-ray scattering