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Systematically studying the crystal, magnetic, and electronic structures of PuGa3 with density functional theory (DFT) reveals the entanglement of the three types of structure. Magnetic structure affects the energy more strongly than…

材料科学 · 物理学 2013-07-03 Sven P. Rudin

Mn doped semiconductors are extremely interesting systems due to their novel magnetic properties suitable for the spintronics applications. It has been shown recently by both theory and experiment that Mn doped GaN systems have a very high…

材料科学 · 物理学 2016-08-31 B. Sanyal , O. Bengone , S. Mirbt

We investigate magnetic properties of CrTe$_2$ within the density functional theory (DFT) approach in ferromagnetic phase and combination of DFT and dynamical mean field theory (DFT+DMFT) approach in paramagnetic phase. We show that few…

强关联电子 · 物理学 2026-03-03 A. A. Katanin , E. M. Agapov

The different crystal structures of ferromagnetic Ni$_2$MnGa have been calculated using density functional theory (DFT) with special emphasis on the modulated structures 10M and 14M. These are important for understanding the stability of…

材料科学 · 物理学 2007-05-23 A. Zayak , W. A. Adeagbo , P. Entel , V. D. Buchelnikov

An approach is proposed for evaluating dipolar and multipolar inter-site interactions in strongly correlated materials. This approach is based on the single-site dynamical mean-field theory (DMFT) in conjunction with the atomic…

强关联电子 · 物理学 2016-09-13 L. V. Pourovskii

The dc magnetization (M) and electrical resistivity (\rho) as functions of magnetic field and temperature are reported for a series of lightly electron dopedCa(1-x)La(x)MnO(3) (0<=x<=0.10) specimens for which magnetization [Phys. Rev. B…

强关联电子 · 物理学 2007-05-23 C. Chiorescu , J. J. Neumeier , J. L. Cohn

The density functional non-interacting susceptibility has been analyzed in different phases of CaFe2As2 and compared with similar data for pure d-metals. The conditions for the "no local moment" itinerant state with large frustrations are…

超导电性 · 物理学 2009-11-13 G. D. Samolyuk , V. P. Antropov

We present a unified, global perspective on the magnetic properties of strongly disordered electronic systems, with special emphasis on the case where the ground state is metallic. We review the arguments for the instability of the…

强关联电子 · 物理学 2009-10-30 Subir Sachdev

LDA+DMFT is a novel computational technique for ab initio investigations of real materials with strongly correlated electrons, such as transition metals and their oxides. It combines the strength of conventional band structure theory in the…

Electronic correlated systems are often well described by dynamical mean field theory (DMFT). While DMFT studies have mainly focused hitherto on one-particle properties, valuable information is also enclosed into local two-particle Green's…

强关联电子 · 物理学 2012-09-25 Georg Rohringer , Angelo Valli , Alessandro Toschi

Methods based on the combination of the usual density functional theory (DFT) codes with the Hubbard models are widely used to investigate the properties of strongly correlated materials. Using first-principle calculations we study the…

材料科学 · 物理学 2015-08-04 Christos Tsirogiannis , Iosif Galanakis

Motivated by recent studies reporting the formation of localized magnetic moments in doped graphene, we investigate the energetic cost for spin polarizing isolated impurities embedded in this material. When a well-known criterion for the…

材料科学 · 物理学 2015-05-14 P. Venezuela , R. B. Muniz , A. T. Costa , D. M. Edwards , S. R. Power , M. S. Ferreira

We report a theoretical study of the effects of electronic correlations, magnetic properties, and chemical bonding in the recently synthesized high-pressure orthorhombic phase of FeN$_2$ using the DFT+dynamical mean-field theory approach.…

强关联电子 · 物理学 2024-07-25 I. V. Leonov

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…

强关联电子 · 物理学 2016-04-20 S. K. Panda , I. Di Marco , O. Grånäs , O. Eriksson , J. Fransson

Defect-induced magnetic moments are at the center of the research effort on spintronic applications of graphene. Here we study the problem of a nonmagnetic impurity in graphene with a new theoretical method, inhomogeneous cluster dynamical…

强关联电子 · 物理学 2015-04-10 M. Charlebois , D. Sénéchal , A. -M. Gagnon , A. -M. S. Tremblay

We have studied the physical properties of M2InC (M = Zr, Hf and Ta) MAX phases ternary carbides using density functional theory (DFT) methodology. The structural, elastic and electronic properties are revisited (and found to be in good…

材料科学 · 物理学 2018-05-23 F. Sultana , M. M. Uddin , M. A. Ali , M. M. Hossain , S. H. Naqib , A. K. M. A. Islam

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

Effects of alloying on the electronic and magnetic properties of Mn$_{x}$Co$_{y}$ ($x+y$=$n$=2-5; $x$=0-$n$) and Mn$_2$Co$_{11}$ nanoalloy clusters are investigated using the density functional theory (DFT). Unlike the bulk alloy, the…

原子与分子团簇 · 物理学 2008-07-24 Shreemoyee Ganguly , Mukul Kabir , Soumendu Datta , Biplab Sanyal , Abhijit Mookerjee

Applying the local density approximation (LDA) and dynamical mean field theory (DMFT) to paramagnetic $\alpha $-iron, we revisit a problem of theoretical description of its magnetic properties. The analysis of local magnetic susceptibility…

强关联电子 · 物理学 2015-05-19 P. A. Igoshev , A. V. Efremov , A. A. Katanin

A member of the RMn$_6$Sn$_6$ rare-earth family materials, TbMn$_6$Sn$_6$, recently showed experimental signatures of the realization of a quantum-limit Chern magnet. In this work, we use quantum Monte Carlo (QMC) and density functional…