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We calculate magnetic anisotropy energy of Fe and Ni by taking into account the effects of strong electronic correlations, spin-orbit coupling, and non-collinearity of intra--atomic magnetization. The LDA+U method is used and its…

Strongly Correlated Electrons · Physics 2007-05-23 Imseok Yang , Sergej Y. Savrasov , Gabriel Kotliar

We calculate magnetic anisotropy energy of Fe and Ni by taking into account the effects of strong electronic correlations, spin-orbit coupling, and non-collinearity of intra-atomic magnetization. The LDA+U method is used and its equivalence…

Strongly Correlated Electrons · Physics 2009-10-31 Imseok Yang , Sergej Y. Savrasov , Gabriel Kotliar

The new challenges posed by the need of finding strong rare-earth free magnets demand methods that can predict magnetization and magnetocrystalline anisotropy energy (MAE). We argue that correlated electron effects, which are normally…

The total and magnetically resolved Compton profiles are analyzed within the combined density functional and dynamical mean field theory for the transition metal elements Fe and Ni. A rather good agreement between the measured and computed…

Materials Science · Physics 2015-06-19 L. Chioncel , D. Benea , H. Ebert , I. Di Marco , J. Minár

We present results of the magneto-crystalline anisotropy energy (MAE) calculations for chemically ordered $L1_0$ CoPt and FePt alloys taking into account the effects of strong electronic correlations and spin-orbit coupling. The local spin…

Materials Science · Physics 2009-11-07 Alexander B. Shick , Oleg N. Mryasov

Magnetometry measurements of Fe/U and Ni/U bilayer systems reveal a non-monotonic dependence of the magnetic anisotropy for U thicknesses in the range 0 nm - 8 nm, with the Fe/U bilayers showing a more prominent effect as compared to Ni/U.…

Mesoscale and Nanoscale Physics · Physics 2021-03-24 E. R. Gilroy , M. -H. Wu , M. Gradhand , R. Springell , C. Bell

The electronic structure and magnetic properties of a single Fe adatom on a CuN surface have been studied using density functional theory in the local spin density approximation (LSDA), the LSDA+U approach and the local density…

Strongly Correlated Electrons · Physics 2016-04-20 S. K. Panda , I. Di Marco , O. Grånäs , O. Eriksson , J. Fransson

We present a first-principles study of the large magneto-crystalline anisotropy in the intercalated di-chalcogenide material \ce{Fe_{0.25}TaS_2}, investigated with the DFT+U approach. We verify a uniaxial magnetocrystalline anisotropy…

Strongly Correlated Electrons · Physics 2016-05-24 Vaideesh Loganathan , Jian-Xin Zhu , Andriy H. Nevidomskyy

The magnetocrystalline anisotropy energies (MAEs) of the ferromagnetic metals bcc Fe, fcc and hcp Co, and fcc Ni have been calculated by using the {\it ab initio} tight-binding method. Disentangling the strong correlation among the $d$…

Materials Science · Physics 2009-11-10 Yuannan Xie , John A. Blackman

Substantial amounts of the transition metals Mn, Fe, Co, and Ni can be substituted for Li in single crystalline Li$_2$(Li$_{1-x}T_x$)N. Isothermal and temperature-dependent magnetization measurements reveal local magnetic moments with…

Materials Science · Physics 2015-06-09 A. Jesche , L. Ke , J. L. Jacobs , B. Harmon , R. S. Houk , P. C. Canfield

First-principles calculations of the magnetic anisotropy energy for Mn- and Fe-atoms on CuN/Cu(001) surface are performed making use of the torque method. The easy magnetization direction is found to be different for Mn and Fe atoms in…

Materials Science · Physics 2015-05-13 A. B. Shick , F. Máca , A. I. Lichtenstein

The influence of dynamical correlation effects on the magneto-optical properties of ferromagnetic Fe and Ni has been investigated. In addition the temperature dependence of the self-energy and its influence on the DOS and optical…

Strongly Correlated Electrons · Physics 2009-11-10 A. Perlov , S. Chadov , H. Ebert , L. Chioncel , A. I. Lichtenstein , M. I. Katsnelson

The magnetic anisotropy energy of Fe and Co monatomic nanowires both free-standing and at the step edge of a Pt surface is investigated within the framework of the density-functional theory and local-spin-density (LSDA) approximation.…

Materials Science · Physics 2007-05-23 Matej Komelj Daniel Steiauf Manfred Faehnle

The electronic structure and numerous magnetic properties of MnBi magnetic systems are investigated using local spin density approximation (LSDA) with on-cite Coulomb correlations (LSDA+$U$) included. We show that the inclusion of Coulomb…

Strongly Correlated Electrons · Physics 2015-06-22 V. P. Antropov , V. N. Antonov , L. V. Bekenov , A. Kutepov , G. Kotliar

The electronic structure and magnetic properties of pure and doped {Fe$_{16}$N$_2$} systems have been studied in the local-density (LDA) and quasiparticle self-consistent {\emph{GW}} approximations. The {\emph{GW}} magnetic moment of pure…

Using first-principles calculations, we study the magnetism of 5d transition-metal atomic junctions including structural relaxations and spin-orbit coupling. Upon stretching monatomic chains of W, Ir, and Pt suspended between two leads, we…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Alexander Thiess , Yuriy Mokrousov , Stefan Heinze

To understand the effect of molecular environment on the electronic and magnetic properties of the single-molecule magnet (SMM) Mn$_{12}$, we explore two possible means for adding extra electrons to molecule. We explore both substitution of…

Materials Science · Physics 2009-11-10 Kyungwha Park , Mark R. Pederson

We present first principles calculations of the magnetic moments and magnetic anisotropy energies of small Fe, Co and Ni clusters on top of a Ag(100) surface as well as the exchange-coupling energy between two single adatoms of Fe or Co on…

Materials Science · Physics 2009-11-07 B. Lazarovits , L. Szunyogh , P. Weinberger

We investigated the effect of mean-field electron correlations on the band electronic structure of Co, Ni, and Pd ultra-thin monatomic nanowires, at the breaking point, by means of density-functional calculations in the self-interaction…

Materials Science · Physics 2009-11-10 Malgorzata Wierzbowska , Anna Delin , Erio Tosatti

Consequences of anisotropy (variation of orbital occupation) and magnetism, and their coupling, are analyzed for LSDA+U functionals, both the commonly used ones as well as less commonly applied functionals. After reviewing and extending…

Strongly Correlated Electrons · Physics 2009-01-21 Erik R. Ylvisaker , Warren E. Pickett , Klaus Koepernik
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