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Based on geometry optimization and magnetic structure investigations within density functional theory, unique uranium nitride fluoride UNF, isoelectronic with UO2, is shown to present peculiar differentiated physical properties. Such…

Materials Science · Physics 2018-08-30 Samir F Matar

A geometrical interpretation of the $G$-structures associated to elastic material bodies is given. In addition, characterizations of their integrability are obtained. Since the lack of integrability is a geometrical measure of the lack of…

Differential Geometry · Mathematics 2007-05-23 David Marin , Manuel de Leon

A hexagonal structure of solid molecular hydrogen with $P6_122$ symmetry is calculated to be more stable below about 200 GPa than the monoclinic $C2/c$ structure identified previously as the best candidate for phase III. We find that the…

Materials Science · Physics 2016-11-01 Bartomeu Monserrat , Richard J. Needs , Eugene Gregoryanz , Chris J. Pickard

In this study, the magnetism and electronic structure of LaTiO$_3$ bilayers along both the ($001$) and ($111$) orientations are calculated using the density functional theory. The band insulator LaScO$_3$ is chosen as the barrier layer and…

Materials Science · Physics 2015-06-19 Yakui Weng , Shuai Dong

The electronic structure of the heavy fermion compound CeB6 is probed by resonant inelastic soft X-ray scattering using photon energies across the Ce 3d and 4d absorption edges. The hybridization between the localized 4f orbitals and the…

Materials Science · Physics 2012-01-04 M. Magnuson , S. M. Butorin , J. -H. Guo , A. Agui , J. Nordgren , H. Ogasawara , A. Kotani , T. Takahashi , S. Kunii

First-principles calculations are performed to study the structural and optoelectronic properties of the newly synthesized nonisovalent and lattice-matched (Si2)0.6(AlP)0.4 alloy [T. Watkins et al., J. Am. Chem. Soc. 2011, 133, 16212.] We…

Materials Science · Physics 2012-09-11 Ji-Hui Yang , Yingteng Zhai , Hengrui Liu , Hongjun Xiang , Xingao Gong , Su-Huai Wei

In the isostructural oxides Ca3CoMO6 (M = Co, Rh, Ir), the CoMO6 chains made up of face-sharing CoO6 trigonal prisms and MO6 octahedra are separated by Ca atoms. We analyzed the magnetic and electronic properties of these oxides on the…

Strongly Correlated Electrons · Physics 2011-01-05 Yuemei Zhang , Erjun Kan , Hongjun Xiang , Antoine Villesuzanne , Myung-Hwan Whangbo

Atomically-thin magnetic crystals have been recently isolated experimentally, greatly expanding the family of two-dimensional materials. In this Article we present an extensive comparative analysis of the electronic and magnetic properties…

Strongly Correlated Electrons · Physics 2019-09-06 Guido Menichetti , Matteo Calandra , Marco Polini

The electronic structure of the A-type antiferromagnetic insulator LaMnO3 is investigated by the GW approximation. The band gap and spectrum are in a good agreement with experimental observation. The on-site/off-site dynamical screened…

Strongly Correlated Electrons · Physics 2007-05-23 Y. Nohara , A. Yamasaki , S. Kobayashi , T. Fujiwara

This article is the third in the series. It is devoted the calculation of the structure constants for the complex simple Lie algebra of type E_6 and Chevalley commutator formulas.

Group Theory · Mathematics 2024-03-18 Anna I. Polovinkina , Sergey G. Kolesnikov

The dynamical structure factor of a Coulomb crystal of ions is calculated at arbitrary temperature below the melting point taking into account multi-phonon processes in the harmonic approximation. In a strongly coupled Coulomb ion liquid,…

Plasma Physics · Physics 2007-05-23 D. A. Baiko , A. D. Kaminker , A. Y. Potekhin , D. G. Yakovlev

We use ab initio density functional theory to study the equilibrium geometry and electronic structure of few-layer grey arsenic. In contrast to the bulk structure that is semimetallic, few-layer grey As displays a significant band gap that…

Mesoscale and Nanoscale Physics · Physics 2014-10-24 Zhen Zhu , Jie Guan , David Tomanek

We present a systematic study of the geometries, energetics, electronic structure and bonding in various Al-Li clusters viz. AlnLin ($n$=1-11), Al$_2^-$, Al$_2^{2-}$, Al$_2$Li, Al$_2$Li$^-$, and Al6Li8 using Born-Oppenheimer molecular…

Atomic and Molecular Clusters · Physics 2009-11-10 S. Chacko , D. G. Kanhere , V. V. Paranjape

The electronic structure of the infinite layer compound CaCuO$_2$ has been calculated with the B3LYP hybrid density functional. The mixing of the Hartree-Fock exchange in the exchange-correlation energy separated the bands crossing Fermi…

Strongly Correlated Electrons · Physics 2007-05-23 Xiao-Bing Feng , N. M. Harrison

Shell structure in the single particle spectrum of deformed harmonic oscillator potentials when a term proportional to $(\vec L)^2$ is added is analyzed for a large particle number. A scaling law which gives a dividing line between regular…

Condensed Matter · Physics 2009-10-30 W. D. Heiss , R. G. Nazmitdinov

We report a series of calculations testing the predictions of the Tran-Blaha functional for the electronic structure and magnetic properties of condensed systems. We find a general improvement in the properties of semiconducting and…

Materials Science · Physics 2010-11-08 David J. Singh

We extend density matrix embedding theory to periodic systems, resulting in an electronic band structure method for solid-state materials. The electron correlation can be captured by means of a local impurity model using various choices of…

Strongly Correlated Electrons · Physics 2019-09-27 Hung Q. Pham , Matthew R. Hermes , Laura Gagliardi

Ab initio molecular dynamics simulations are used to investigate the structure and electronic properties of the liquid Ag-Se system at three compositions. The realism of the simulations is demonstrated by comparison with diffraction data…

mtrl-th · Physics 2009-10-28 F. Kirchhoff , J. M. Holender , M. J. Gillan

Thin nanowires of silicon oxide were studied by pseudopotential density functional electronic structure calculations using the generalized gradient approximation. Infinite linear and zigzag Si-O chains were investigated. A wire composed of…

Materials Science · Physics 2009-11-11 G. Bilalbegovic

Understanding of bonding is key to modelling materials and predicting properties thereof. A widely adopted indicator of bonds and atomic shells is the electron localization function (ELF). The building blocks of the ELF are also used in the…