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The electronic structure and magnetic properties of the strongly correlated material La$_2$O$_3$Fe$_2$Se$_2$ are studied by using both the density function theory plus $U$ (DFT+$U$) method and the DFT plus Gutzwiller (DFT+G) variational…

材料科学 · 物理学 2016-09-07 Guangxi Jin , Yilin Wang , Xi Dai , Xinguo Ren , Lixin He

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

We present the results of numerical studies for selected materials with strongly correlated electrons using a combination of the local-density approximation and dynamical mean-field theory (DMFT). For the solution of the DMFT equations a…

强关联电子 · 物理学 2011-02-11 Arno P. Kampf , Marcus Kollar , Jan Kunes , Michael Sentef , Dieter Vollhardt

Most realistic calculations of moderately correlated materials begin with a ground-state density functional theory (DFT) calculation. While Kohn-Sham DFT is used in about 40,000 scientific papers each year, the fundamental underpinnings are…

强关联电子 · 物理学 2022-09-26 Kieron Burke , John Kozlowski

We review recent results on the properties of materials with correlated electrons obtained within the LDA+DMFT approach, a combination of a conventional band structure approach based on the local density approximation (LDA) and the…

强关联电子 · 物理学 2015-03-13 J. Kunes , I. Leonov , M. Kollar , K. Byczuk , V. I. Anisimov , D. Vollhardt

Noncollinear (NC) magnetism and spin-orbit coupling (SOC) are indispensable for predictive ab initio materials simulations with pronounced relativistic effects and magnetic frustration, yet they significantly increase the cost of…

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 sensitivity of Density Functional Theory plus Dynamical Mean Field Theory calculations to different constructions of the correlated orbitals is investigated via a detailed comparison of results obtained for the quantum material…

强关联电子 · 物理学 2021-05-12 Jonathan Karp , Alexander Hampel , Andrew J. Millis

In this study, we introduce a novel implementation of density functional theory integrated with single-site dynamical mean-field theory to investigate the complex properties of strongly correlated materials. This comprehensive…

强关联电子 · 物理学 2025-04-01 Jia-Ming Wang , Jing-Xuan Wang , Rong-Qiang He , Li Huang , Zhong-Yi Lu

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

Combining the density functional theory (DFT) and the Gutzwiller variational approach, a LDA+Gutzwiller method is developed to treat the correlated electron systems from {\it ab-initio}. All variational parameters are self-consistently…

强关联电子 · 物理学 2009-11-13 XiaoYu Deng , Xi Dai , Zhong Fang

We propose a self-consistent method for electronic structure calculations of correlated systems, which combines the local spin-density approximation (LSDA) and the dynamical mean field theory (DMFT). The LSDA part is based on the exact…

强关联电子 · 物理学 2007-05-23 L. Chioncel , L. Vitos , I. A. Abrikosov , J. Kollar , M. I. Katsnelson , A. I. Lichtenstein

Charge transfer in superlattices consisting of SrIrO$_3$ and SrMnO$_3$ is investigated using density functional theory. Despite the nearly identical work function and non-polar interfaces between SrIrO$_3$ and SrMnO$_3$, rather large charge…

材料科学 · 物理学 2017-09-25 Satoshi Okamoto , John Nichols , Changhee Sohn , Soy Yeun Kim , Tae Won Noh , Ho Nyung Lee

I present a critical overview of so-called "{\it ab initio}" DFT (density fuctional theory) based calculation schemes for the description of the electronic structure, energy spectrum, and optical response for strongly correlated 3$d$…

强关联电子 · 物理学 2023-01-31 A. S. Moskvin

Building on work by Florens and Georges, we formulate and study a self-consistent slave rotor mean field theory for strongly correlated systems. This approach views the electron, in the strong correlation regime, as a composite of a neutral…

强关联电子 · 物理学 2009-11-13 Erhai Zhao , Arun Paramekanti

We present in full detail a newly developed formalism enabling density functional perturbation theory (DFPT) calculations from a DFT+$U$ ground state. The implementation includes ultrasoft pseudopotentials and is valid for both insulating…

Understanding the properties of warm dense hydrogen is of key importance for the modeling of compact astrophysical objects and to understand and further optimize inertial confinement fusion (ICF) applications. The work horse of warm dense…

The development of new exchange-correlation functionals within density functional theory means that increasingly accurate information is accessible at moderate computational cost. Recently, a newly developed self-consistent hybrid…

材料科学 · 物理学 2017-11-10 Daniel Fritsch , Benjamin J. Morgan , Aron Walsh

First-principles calculations based on density functional theory + Hubbard U (DFT+U) approach have been carried out to study the strain induced variations in the optical and transport properties of the correlated perovskite SrVO$_3$. By…

材料科学 · 物理学 2023-06-28 Maitreyo Biswas , Debolina Misra , Tarun K. Kundu

We discuss the recently proposed LDA'+DMFT approach providing consistent parameter free treatment of the so called double counting problem arising within the LDA+DMFT hybrid computational method for realistic strongly correlated materials.…

强关联电子 · 物理学 2015-06-11 I. A. Nekrasov , N. S. Pavlov , M. V. Sadovskii