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相关论文: First-principles investigation of uranium monochal…

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Magnetic anisotropy of uranium monochalcogenides, US, USe and UTe, is studied by means of fully-relativistic spin-polarized band structure calculations within the local spin-density approximation. It is found that the size of the magnetic…

材料科学 · 物理学 2009-10-31 Tatsuya Shishidou , Tamio Oguchi

We have studied the effect of local Coulomb interactions on the electronic structure of the molecular magnet Mn12-acetate within the LDA+U approach. The account of the on-site repulsion results in a finite energy gap and an integer value of…

介观与纳米尺度物理 · 物理学 2009-11-07 D. W. Boukhvalov , A. I. Lichtenstein , V. V. Dobrovitski , M. I. Katsnelson , B. N. Harmon , V. V. Mazurenko , V. I. Anisimov

We have investigated the electronic states of the uranium monochalcogenide US, which is a typical ferromagnetic uranium compound, using soft x-ray photoemission spectroscopy (SX-PES). In early ultraviolet photoemission spectroscopy studies,…

强关联电子 · 物理学 2009-09-17 Y. Takeda , T. Okane , T. Ohkochi , Y. Saitoh , H. Yamagami , A. Fujimori , A. Ochiai

Using a combination of local spin density and Hubbard 1 approximations we study the mechansim of exchange interacion in EuX (X=O, S, Se and Te). We reproduce known experimental results about bulk modulus, critical pressure for structural…

材料科学 · 物理学 2015-05-18 Xiangang Wan , Jinming Dong , Sergej Y. Savrasov

Electronic structure and band characteristics for zinc monochalcogenides with zinc-blende- and wurtzite-type structures are studied by first-principles density-functional-theory calculations with different approximations. It is shown that…

材料科学 · 物理学 2009-11-11 S. Zh. Karazhanov , P. Ravindran , U. Grossner , A. Kjekshus , H. Fjellvag , B. G. Svensson

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…

材料科学 · 物理学 2018-08-30 Samir F Matar

Crystalline Co$_{x}$Cu$_{1-x}$ alloys show interesting magnetic behavior over the entire concentration regime. We here present a fully self- consistent first principles electronic structure studies of the electronic structure and magnetic…

材料科学 · 物理学 2009-10-31 Subhradip Ghosh , Abhijit Mookerjee

The electronic structure of Nickel dichalcogenides, NiS$_2$ and NiSe$_2$, in monolayer form, is studied employing first-principles methods. We assess the importance of band ordering, covalency and Coulomb interactions in the ground state of…

介观与纳米尺度物理 · 物理学 2023-12-19 Sergio Bravo , P. A. Orellana , L. Rosales

Electronic structure of bcc Np, fcc Pu, Am, and Cm pure metals under pressure has been investigated employing the LDA+U method with spin-orbit coupling (LDA+U+SO). Magnetic state of the actinide ions was analyzed in both LS and jj coupling…

We study the spin-dependent electronic structure of UTe and UT_{2}Si_{2} (T=Cu and Mn) compounds with a combination of x-ray magnetic circular dichroism measurements and first principle calculations. By exploiting the presence of sizable…

强关联电子 · 物理学 2016-01-12 R. D. dos Reis , L. S. I. Veiga , D. Haskel , J. C. Lang , Y. Joly , F. G. Gandra , N. M. Souza-Neto

We carried out calculations of the energies and magnetic dipole hyperfine structure constants of the low-lying states of 233U^+ and 233U using two different approaches. With six valence electrons and a very heavy core, uranium represents a…

原子物理 · 物理学 2022-10-14 S. G. Porsev , C. Cheung , M. S. Safronova

We have investigated the crystal, electronic, and magnetic structure of Mn5O8 by means of state of-the-art density functional theory calculations and neutron powder diffraction (NPD) measurements. This compound stabilizes in the monoclinic…

We present results of an ab-initio study of the electronic structure of 140 rare earth compounds. Specifically we predict an electronic phase diagram of the entire range of rare earth monopnictides and monochalcogenides, composed of…

强关联电子 · 物理学 2015-02-23 L. Petit , R. Tyer , Z. Szotek , W. M. Temmerman , A. Svane

A novel Gaussian-Sinc mixed basis set for the calculation of the one-electron electronic structure within a uniform magnetic field in three dimensions is presented. The one-electron system is used to demonstrate the utility of this new…

计算物理 · 物理学 2014-11-12 Jonathan L. Jerke , Young Lee , C. J. Tymczak

The electronic structure of the monoclinic structure of Fe$_3$O$_4$ is studied using both the local density approximation (LDA) and the LDA+$U$. The LDA gives only a small charge disproportionation, thus excluding that the structural…

强关联电子 · 物理学 2016-08-16 Georg K. H. Madsen , Pavel Novák

We give a detailed description of a recently proposed first principles approach to the electronic structure of strongly correlated materials. The method combines the GW approximation with dynamical mean field theory. It is designed to…

强关联电子 · 物理学 2007-05-23 Ferdi Aryasetiawan , Silke Biermann , Antoine Georges

Theoretical investigations of the electronic, magnetic and structural properties of LaTiO3 and YTiO3 have been made. In the framework of GGA and GGA+U scheme we analyzed the effect of the local Coulomb interaction (U) value on the atomic…

强关联电子 · 物理学 2015-06-24 S. Okatov , A. Poteryaev , A. Lichtenstein

Recent experiments revealed that monolayer $\alpha$-RuCl$_3$ can be obtain by chemical exfoliation method and exfoliation or restacking of nanosheets can manipulate the magnetic properties of the materials. In this present paper, the…

We present a method for calculating the electronic structure of correlated materials based on a truly first-principles LDA+U scheme. Recently we suggested how to calculate U from first-principles, using a method which we named constrained…

强关联电子 · 物理学 2010-06-17 K. Karlsson , F. Aryasetiawan , O. Jepsen

The electronic structure of the low-temperature (LT) monoclinic magnetite, Fe3O4, is investigated using the local spin density approximation (LSDA) and the LSDA+U method. The self-consistent charge ordered LSDA+U solution has a pronounced…

强关联电子 · 物理学 2007-05-23 I. Leonov , A. N. Yaresko , V. N. Antonov , V. I. Anisimov
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