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First principles calculations were performed to study the ground state electronic properties of BaFeO3 (BFO) within the density functional theory (DFT). Adopting generalized gradient approximation (GGA) exchange and correlation functional…

材料科学 · 物理学 2007-05-23 Hong-Jian Feng , Fa-Min Liu

The Fe$_{n}$GeTe$_{2}$ systems are newly discovered two-dimensional van-der-Waals materials, exhibiting magnetism at room temperature. The sub-systems belonging to Fe$_{n}$GeTe$_{2}$ class are special because they show site-dependent…

材料科学 · 物理学 2022-12-19 Sukanya Ghosh , Soheil Ershadrad , Vladislav Borisov , Biplab Sanyal

We shed light on the interplay between structure and many-body effects relevant for itinerant ferromagnetism in LaAlO$_3$/SrTiO$_3$ heterostructures. The realistic correlated electronic structure is studied by means of the (spin-polarized)…

材料科学 · 物理学 2014-08-27 Frank Lechermann , Lewin Boehnke , Daniel Grieger , Christoph Piefke

The ab initio computational method known as Hubbard-corrected density functional theory (DFT+$U$) captures well ground electronic structures of a set of solids that are poorly described by standard DFT alone. Since lattice dynamical…

材料科学 · 物理学 2025-06-17 Wooil Yang , Sabyasachi Tiwari , Feliciano Giustino , Young-Woo Son

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

We present a comparative electronic structure study using DFT and various beyond-DFT (DFT+$U$, $G_0W_0$, DFT+DMFT) methods for ferromagnetic Iron (Fe) to find better approach for describing the spectral properties of correlated magnetic…

强关联电子 · 物理学 2021-01-01 Antik Sihi , Sudhir K. Pandey

Density functional theory (DFT) has been widely applied to a variety of realistic materials but often struggles to explain the properties of correlated systems. The DFT + U method, which introduces a Hubbard U correction to the DFT, has…

强关联电子 · 物理学 2025-08-20 Ju Hyeon Lee , Bongjae Kim

The electronic energy structures and magnetic properties of iron-based compounds with group VI elements (FeTe, BiFeO$_3$, SrFe$_{12}$O$_{19}$ and SrCoTiFe$_{10}$O$_{19}$) are studied using the density functional theory (DFT) methods.…

材料科学 · 物理学 2015-10-05 G. E. Grechnev , A. A. Lyogenkaya , O. V. Kotlyar , A. S. Panfilov , V. P. Gnezdilov

Predicting the compositional phase stability of strongly correlated electron materials is an outstanding challenge in condensed matter physics, requiring precise computations of total energies. In this work, we employ the density functional…

强关联电子 · 物理学 2020-07-28 Eric B. Isaacs , Chris A. Marianetti

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…

强关联电子 · 物理学 2019-09-06 Guido Menichetti , Matteo Calandra , Marco Polini

Hubbard-corrected density functional theory, denoted by DFT+U method, was developed to enable correct prediction of insulating properties for strongly-correlated electron systems. UO$_2$ is an example having O-$2p$, U-$6d$, and U-$5f$…

强关联电子 · 物理学 2023-02-28 Mahmoud Payami

A systematic comparative study has been performed to better understand DFT$+U$ (density functional theory + $U$) method. We examine the effect of choosing different double counting and exchange-correlation functionals. The calculated energy…

强关联电子 · 物理学 2018-06-26 Siheon Ryee , Myung Joon Han

The structural and magnetic properties of spinel compounds $CoB_2O_4$ (B=Cr,Mn and Fe) are studied using the DFT+U method and generalized gradient approximation (GGA). We concentrate on understanding the trends in the properties of these…

强关联电子 · 物理学 2016-09-21 Debashish Das , Rajkumar Biswas , Subhradip Ghosh

Using density functional theory combined with a Hubbard model (DFT+U ), the electronic band structure of CrI3 multilayers, both free-standing and enclosed between graphene contacts, is calculated. We show that the DFT+U approach, together…

材料科学 · 物理学 2020-10-21 Soumyajit Sarkar , Peter Kratzer

We study the structural, electronic, and magnetic properties of Co$_2$ZAl compounds employing a pseudopotential electronic bandstructure method. The stability of the compounds is established through the formation and cohesive energy…

材料科学 · 物理学 2020-08-11 Sashi Nepal , Ramesh Dhakal , Iosif Galanakis

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

Distortions of the oxygen octahedra influence the fundamental electronic structure of perovskite oxides, such as their bandwidth and exchange interactions. Utilizing a fully ab-initio methodology based on density functional theory plus…

强关联电子 · 物理学 2021-07-02 Alexander Hampel , Jeremy Lee-Hand , Antoine Georges , Cyrus E. Dreyer

The electronic structure of selected rare-earth atoms adsorbed on a free-standing graphene was investigated using methods beyond the conventional density functional theory (DFT+U, DFT+HIA and DFT+ED). The influence of the electron…

Optical spectroscopy, X-ray diffraction measurements, density functional theory (DFT) and density functional theory + embedded dynamical mean field theory (DFT+eDMFT) have been used to characterize structural and electronic properties of…

To study crystals that contain heavy atoms, it is important to consider the relativistic effects, as electrons in orbitals close to the atom's nucleus can reach speeds comparable to that of light in a vacuum. In this study, we utilized the…

材料科学 · 物理学 2024-04-25 Mahmoud Payami , Samira Sheykhi
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