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Related papers: Electronic Structure of Calcium Hexaboride within …

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Atomic effective pseudopotentials enable atomistic calculations at the level of accuracy of density functional theory for semiconductor nanostructures with up to fifty thousand atoms. Since they are directly derived from ab-initio…

Materials Science · Physics 2024-03-14 Surender Kumar , Hanh Bui , Gabriel Bester

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…

Materials Science · Physics 2013-03-20 Nina J. Lane , Michel W. Barsoum , James M. Rondinelli

Chuang et al (Reports, 8th of January 2010, p. 181)1 report quasiparticle interference (QPI) imaging that shows pronounced C2 asymmetry. They interpreted this result as indication of an electronic nematic phase with an electron band…

Superconductivity · Physics 2010-05-12 S. A. J. Kimber , D. N. Argyriou , I. I. Mazin

Complementary angle-resolved photoemission and bulk-sensitive k-resolved resonant inelastic x-ray scattering of divalent hexaborides reveal a >1 eV X-point gap between the valence and conduction bands, in contradiction to the band overlap…

Strongly Correlated Electrons · Physics 2009-11-07 J. D. Denlinger , J. A. Clack , J. W. Allen , G. -H. Gweon , D. M. Poirier , C. G. Olson , J. L. Sarrao , A. D. Bianchi , Z. Fisk

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 provide a straightforward and numerically efficient procedure to perform local density approximation + Hubbard I (LDA+HIA) calculations, including self-consistency over the charge density, within the full potential linearized augmented…

Materials Science · Physics 2009-09-03 Alexander B. Shick , Jindrich Kolorenč , Alexander I. Lichtenstein , Ladislav Havela

For a set of ten crystalline materials (oxides and semiconductors), we compute the electronic band structures using the Tran-Blaha [Phys. Rev. Lett. 102, 226401 (2009)] (TB09) functional. The band widths and gaps are compared with those…

Transition-metal-based Heusler semiconductors are promising materials for a variety of applications ranging from spintronics to thermoelectricity. Employing the $GW$ approximation within the framework of the FLAPW method, we study the…

Materials Science · Physics 2016-06-01 M. Tas , E. Sasioglu , I. Galanakis , C. Friedrich , S. Blugel

Density functional calculations within the weighted density approximation (WDA) are presented for YH$_3$ and LaH$_3$. We investigate some commonly used pair-distribution functions G. These calculations show that within a consistent density…

Condensed Matter · Physics 2009-11-10 Zhigang Wu , R. E. Cohen , D. J. Singh , R. Gupta , M. Gupta

We report accurate, calculated electronic, transport, and bulk properties of zinc blende gallium arsenide (GaAs). Our ab-initio, non-relativistic, self-consistent calculations employed a local density approximation (LDA) potential and the…

A new method (NM) for filtering three-dimensional reconstructed densities is proposed. The algorithm is tested with simulated spectra and employed to study the electronic structure of the rare-earth compound LaB6. For this system, momentum…

Materials Science · Physics 2007-05-23 G. Kontrym-Sznajd , M. Samsel-Czekala , M. Biasini , Y. Kubo

We have investigated the electronic structure of fluorite Cu$_{2}$Se using density functional theory calculations within the LDA, PBE and AM05 approximations as well as with the non-local hybrid PBE0 and HSE approximations. Our results show…

Materials Science · Physics 2013-03-04 Mikael Råsander , Lars Bergqvist , Anna Delin

A widely used approximation to the exchange-correlation functional in density functional theory is the local density approximation (LDA), typically derived from the properties of the homogeneous electron gas (HEG). We previously introduced…

Other Condensed Matter · Physics 2018-06-27 Mike Entwistle , Michele Casula , Rex Godby

We study the electronic structure and thermoelectric properties of recently synthesized CoAsSb. The calculated bandgap becomes more accurate for increasingly-complex electronic structure methods: generalized gradient approximation, hybrid…

Materials Science · Physics 2020-02-03 Andrey L. Kutepov , Anthony Ruth

Density functional theory within the local or semilocal density approximations (DFT-LDA/GGA) has become a workhorse in electronic structure theory of solids, being extremely fast and reliable for energetics and structural properties, yet…

The electronic band structure of CeAgSb$_{2}$ has been calculated using the self-consistent full potential nonorthogonal local orbital minimum basis scheme based on the density functional theory. We investigated the electronic structure…

Strongly Correlated Electrons · Physics 2009-11-11 T. Jeong

We discuss a general approach to a realistic theory of the electronic structure in materials containing correlated d- or f- electrons. The main feature of this approach is the taking into account the energy dependence of the electron…

Strongly Correlated Electrons · Physics 2009-10-30 A. I. Lichtenstein , M. I. Katsnelson

The electronic structure of the rational approximants 1/1 Cd6Yb and 1/1 Cd6Ca to the stable icosahedral CdYb and CdCa quasicrystals is studied by the full-potential linear augmented plane wave method. A comparison is made between several…

Other Condensed Matter · Physics 2009-11-10 E. S. Zijlstra , S. K. Bose , R. Tamura

Electronic structure and cohesive properties of metastable hexagonal AgB_{2} and silver-deficient borides Ag_{0.875}B_{2} and Ag_{0.750}B_{2} were investigated by means of the projected augmented wave method in the framework of the density…

Materials Science · Physics 2007-05-23 I. R. Shein , N. I. Medvedeva , A. L. Ivanovskii

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,…

Strongly Correlated Electrons · Physics 2007-05-23 R. J. Xiao , H. X. Yang , L. F. Xu , H. R. Zhang , Y. G. Shi , J. Q. Li