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Related papers: Nature of the 5$f$ electronic structure of plutoni…

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The structural, electronic, mechanical, optical, thermodynamic properties of plutonium monoxide monohydride (PuOH) are studied by density-functional calculations within the framework of LDA/GGA and LDA/GGA+U.From the total energy…

Materials Science · Physics 2020-01-14 Ruizhi Qiu , Haiyan Lu , Bingyun Ao , Tao Tang , Piheng Chen

Using inelastic x-ray scattering beyond the dipole limit and hard x-ray photoelectron spectroscopy we establish the dual nature of the U $5f$ electrons in UM$_2$Si$_2$ (M = Pd, Ni, Ru, Fe), regardless of their degree of delocalization. We…

The electronic and geometric properties of bulk fcc delta-plutonium and the quantum size effects in the surface energies and the work functions of the (001) ultra thin films (UTF) up to 7 layers have been investigated with periodic density…

Strongly Correlated Electrons · Physics 2009-11-10 Xueyuan Wu , Asok K. Ray

The results of electronic structure calculations for a variety of palladium hydrides are presented. The calculations are based on density functional theory and used different local and semilocal approximations. The thermodynamic stability…

Materials Science · Physics 2014-11-07 Abdesalem Houari , Samir F. Matar , Volker Eyert

In heavy-fermion compounds, f electrons show both itinerant and localized behaviour depending on the external conditions, and the hybridization between localized f electrons and itinerant conduction bands gives rise to their exotic…

Strongly Correlated Electrons · Physics 2017-07-10 D. H. Xie , M. L. Li , W. Zhang , L. Huang , W. Feng , Y. Fang , Y. Zhang , Q. Y. Chen , X. G. Zhu , Q. Liu , B. K. Yuan , L. Z. Luo , P. Zhang , X. C. Lai , S. Y. Tan

The electronic and geometrical properties of bulk americium and square and hexagonal americium monolayers have been studied with the full-potential linearized augmented plane wave (FP-LAPW) method. The effects of several common…

Strongly Correlated Electrons · Physics 2009-11-11 Da Gao , Asok K. Ray

The crystal structures of ANb$_3$Br$_7$S (A = Rb and Cs) have been refined by single crystal X-ray diffraction, and are found to form highly anisotropic materials based on chains of the triangular Nb$_3$ cluster core. The Nb$_3$ cluster…

The structures and electronic states in all polymorphs of poly(vinylidene fluoride) (PVDF) were calculated in various levels using the CRYSTAL software. The calculated lattice constants with PBE0/cc-pVTZ agreed well with experimental…

Materials Science · Physics 2014-05-27 Akira Itoh

The electronic structure of Samarium (Sm) was calculated using the density functional theory combined with the single-site dynamical mean-field theory. In this work, we investigated the electronic properties of {\alpha}, \b{eta} and…

Strongly Correlated Electrons · Physics 2026-05-15 Shengsong Xu , Zhenfeng Ouyang , Li Huang , Zhong-Yi Lu

Plutonium displays phase transitions with enormous volume differences among its phases and both its Pauli like magnetic susceptibility and resistivity are an order of magnitude larger than those of simple metals. Curium is also highly…

Strongly Correlated Electrons · Physics 2009-11-11 J. H. Shim , K. Haule , G. Kotliar

First principle calculations were performed to study the ground state electronic properties of Barium titanate within the density functional theory (DFT). In our DFT computations, we used Vosko-Wilk-Nusair correlation energy functional and…

Materials Science · Physics 2007-05-23 Hong-Jian Feng , Fa-Min Liu

We develop a theory for the electronic excitations in UPt$_3$ which is based on the localization of two of the $5f$ electrons. The remaining $f$ electron is delocalized and acquires a large effective mass by inducing intra-atomic…

Strongly Correlated Electrons · Physics 2009-11-07 G Zwicknagl , P. Fulde

We report on results of the first realistic electronic structure calculations of the Pu-based PuCoGa5 superconductor based on the dynamical mean field theory. We find that dynamical correlations due to the local Coulomb interaction between…

Strongly Correlated Electrons · Physics 2009-11-11 L. V. Pourovskii , M. I. Katsnelson , A. I. Lichtenstein

Many theories published in the last decade propose that either ordered or disordered local moments are present in elemental plutonium at low temperatures. We present new experimental data and review previous experimental results. None of…

Materials Science · Physics 2009-11-10 J. C. Lashley , A. C. Lawson , R. J. McQueeney , G. H. Lander

We present results for the electronic structure of alpha uranium using a recently developed quasiparticle self-consistent GW method (QSGW). This is the first time that the f-orbital electron-electron interactions in an actinide has been…

Strongly Correlated Electrons · Physics 2009-07-21 Athanasios N. Chantis , R. C. Albers , M. D. Jones , Mark van Schilfgaarde , Takao Kotani

We investigate the normal state of the superconducting compound PuCoGa$_5$ using the combination of density functional theory (DFT) and dynamical mean field theory (DMFT), with the continuous time quantum Monte Carlo (CTQMC) and the…

Strongly Correlated Electrons · Physics 2018-08-01 W. H. Brito , S. Choi , Y. X. Yao , G. Kotliar

Recent high-pressure x-ray diffraction studies of alkali metals revealed unusual complex structures that follow the body-centered and face-centered cubic structures on compression. The structural sequence of potassium under compression to 1…

Materials Science · Physics 2013-10-18 V F Degtyareva , O Degtyareva

Hybrid density functionals, which replaces a fraction of density functional theory (DFT) exchange with exact Hartree-Fock (HF) exchange, have been used to study the structural, magnetic, and electronic properties of delta-Plutonium. The…

Materials Science · Physics 2009-11-13 Raymond Atta-Fynn , Asok K. Ray

The duality between localized and itinerant nature of magnetism in $5\textit{f}$ electron systems has been a longstanding puzzle. Here, we report inelastic neutron scattering measurements, which reveal both local and itinerant aspects of…

In Uranium-based heavy fermion system, the 5f electrons display an intermediate character between partial localization and partial itinerancy, which makes the Kondo problem more complicated. Here we use scanning tunneling…

Strongly Correlated Electrons · Physics 2021-12-15 W. Feng , D. H. Xie , X. B. Luo , S. Y. Tan , Y. Liu , Q. Liu , Q. Q. Hao , X. G. Zhu , Q. Zhang , Y. Zhang , Q. Y. Chen , X. C. Lai