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We have elucidated the nature of the electron correlation effect in uranium compounds by imaging the partial $\mathrm{U}~5f$ density of states (pDOS) of typical itinerant, localized, and heavy fermion uranium compounds by using the…

UCd$_{11}$ is an antiferromagnetic uranium intermetallic compound ($T_{\rm N}$ = 5.3K) with enhanced electron mass and uranium-uranium spacings nearly twice the Hill limit, suggesting a weakly hybridized 5$f$ electronic character. Various…

Advanced X-ray spectroscopic techniques are widely recognized as state-of-the-art tools for probing the electronic structure, bonding, and chemical environments of the heaviest elements in the periodic table. In this study, we employ X-ray…

A systematic density functional theory (DFT)+U study is conducted to investigate the electron correlation and spin-orbit coupling (SOC) effects in US3 and USe3. Our calculations reveal that inclusion of the U term is essential to get energy…

强关联电子 · 物理学 2012-12-13 Yu Yang , Wei Yang , Ping Zhang

The structural properties of the uranium-encapsulated nano-cage U@Au14 are predicted using density functional theory. The presence of the uranium atom makes the Au14 structure more stable than the empty Au14-cage, with a triplet ground…

原子与分子团簇 · 物理学 2013-12-30 Yang Gao , Xing Dai , Seung-gu Kang , Camilo Andres Jimenez Cruz , Minsi Xin , Yan Meng , Jie Han , Zhigang Wang , Ruhong Zhou

The interaction between gaseous uranium dicarbide and graphite is significant for the safety control and design of Gen-IV nuclear energy system. In this article, the interaction mechanism has been studied using a simplified model of…

原子与分子团簇 · 物理学 2013-12-05 Jie Han , Xing Dai , Cheng Cheng , Minsi Xin , Zhigang Wang , Ping Huai , Ruiqin Zhang

Density functional calculations are used to investigate the electronic structure of two-dimensional 5d tantalum carbides with honeycomb-like lattice structures. We focus on changes in the low-energy bands near the Fermi level with…

材料科学 · 物理学 2013-03-20 Nina J. Lane , Michel W. Barsoum , James M. Rondinelli

High-energy-resolution core-level and valence-band photoelectron spectroscopic studies were performed for the heavy Fermion uranium compounds UGe2, UCoGe, URhGe, URu2Si2, UNi2Al3, UPd2Al3, and UPt3 as well as typical localized and itinerant…

X-ray spectroscopies, by their high selectivity and sensitivity to the chemical environment around the atoms probed, provide significant insight into the electronic structure of molecules and materials. Interpreting experimental results…

化学物理 · 物理学 2024-12-23 Wilken Aldair Misael , André Severo Pereira Gomes

A systematic first-principle study is performed to calculate the lattice parameters, electronic structure, and thermodynamic properties of UN using the local-density approximation (LDA)+\emph{U} and the generalized gradient approximation…

材料科学 · 物理学 2015-05-19 Yong Lu , Bao-Tian Wang , Rong-Wu Li , Hongliang Shi , Ping Zhang

Studying the local moment and 5$f$-electron occupations sheds insight into the electronic behavior in actinide materials. X-ray absorption spectroscopy (XAS) has been a powerful tool to reveal the valence electronic structure when assisted…

Effects of Coulomb correlation on LaOFeAs electronic structure have been investigated by LDA+DMFT(QMC) method. The calculation results show that LaOFeAs is in the regime of intermediate correlation strength with significant part of the…

强关联电子 · 物理学 2009-11-13 A. O. Shorikov , M. A. Korotin , S. V. Streltsov , S. L. Skornyakov , D. M. Korotin , V. I. Anisimov

We present resonant x-ray emission spectroscopic (RXES) data from the uranium intermetallics UPd$_3$, USb, USn$_3$ and URu$_2$Si$_2$, at the U $M_{4,5}$ edges and compare the data to those from the well-localized $5f^2$ semiconductor…

强关联电子 · 物理学 2017-06-12 K. O. Kvashnina , H. C. Walker , N. Magnani , G. H. Lander , R. Caciuffo

The electronic structure and thermodynamical properties of uranium trihydrides ($\alpha$-UH$_{3}$ and $\beta$-UH$_{3}$) have been studied using first-principles density functional theory. We find that inclusion of strong electronic…

强关联电子 · 物理学 2011-01-10 Yu-Juan Zhang , Bao-Tian Wang , Yong Lu , Ping Zhang

The electronic structure of Sr0.35CoO2, structurally analogous to the layered NaxCoO2, has been evaluated using the local spin density approximation (LSDA). We find that evident c-dispersions appear in both the e'g and a1g Co-derived bands,…

强关联电子 · 物理学 2007-05-23 R. J. Xiao , H. X. Yang , L. F. Xu , H. R. Zhang , Y. G. Shi , J. Q. Li

We report electronic band structure calculations for Sr$_{4}$Ru$_{3}$O$_{10}$ that displays both ferromagnetic and metamagnetic behavior. The density functional calculations find the ground state to be ferromagnetic in agreement with the…

The formalism of electronic density-functional-theory, with Hubbard-U corrections (DFT+U), is employed in a computational study of the energetics of U_{1-x} Ce_x O_2 mixtures. The computational approach makes use of a procedure which…

材料科学 · 物理学 2012-03-08 B. E. Hanken , C. R. Stanek , N. Grønbech-Jensen , M. Asta

The electronic structure and magnetic properties of CaCr$\mathrm{O}_3$ have been calculated by two methods, including hybrid-exchange density-function theory and density-functional theory + $U$. The computed densities of states from both of…

强关联电子 · 物理学 2015-05-13 Wei Wu

The electronic structure of ThRu2Si2 was studied by angle-resolved photoelectron spectroscopy (ARPES) with incident photon energies of hn=655-745 eV. Detailed band structure and the three-dimensional shapes of Fermi surfaces were derived…

We have investigated electronic energy band structures and partial density of states of intermetallic compounds $\textit{viz.}$ CrSi, MnSi, FeSi and CoSi, by using density functional theory (DFT). CrSi \& MnSi, FeSi and CoSi have metallic,…

强关联电子 · 物理学 2018-08-22 Paromita Dutta , Sudhir K. Pandey
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