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Using ab initio dynamical mean-field theory we explore the electronic and magnetic states of layered Li$_x$MnO$_2$ as a function of $x$, the state of charge. Constructing real-space Wannier projections of Kohn-Sham orbitals based on the…

Strongly Correlated Electrons · Physics 2023-10-18 Hrishit Banerjee , Clare P. Grey , Andrew J. Morris

Current-induced spin-orbit torque (SOT) has emerged as a promising method for achieving energy-efficient magnetization switching in advanced spintronic devices. However, technological advancement has been inadequate because an external…

Mesoscale and Nanoscale Physics · Physics 2025-01-23 Badsha Sekh , Hasibur Rahaman , Ramu Maddu , Pinkesh Kumar Mishra , Tianli Jin , S. N. Piramanayagam

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…

Strongly Correlated Electrons · Physics 2021-05-12 Jonathan Karp , Alexander Hampel , Andrew J. Millis

We present a detailed mean-field study to address the fundamental discrepancy in the ground state magnetization of $\mathrm{Sr_{2}CoO_{4}}$ (SCO). In contrast to the ferromagnetic metallic ground state obtained from density functional…

Strongly Correlated Electrons · Physics 2024-01-11 Shivani Bhardwaj , Sudhir K. Pandey

Here we study the transport properties of a nickelate compound, namely LaNiO2 using density functional theory (DFT) in conjunction with dynamical mean field theory (DMFT). An interacting multi-orbital spin-resolved scenario for LaNiO2…

Strongly Correlated Electrons · Physics 2021-10-04 Mijanur Islam , Sudipta Koley , Saurabh Basu

We discuss the role of dynamical many-electron effects in the physics of iron and iron-rich solid alloys under applied pressure on the basis of recent ab initio studies employing the dynamical mean-field theory (DMFT). Electronic…

Strongly Correlated Electrons · Physics 2019-09-19 Leonid V. Pourovskii

The importance of electronic correlation effects in the layered perovskite Sr$_2$RuO$_4$ is evidenced. To this end we use state-of-the-art LDA+DMFT (Local Density Approximation + Dynamical Mean-Field Theory) in the basis of Wannier…

Strongly Correlated Electrons · Physics 2007-05-23 Z. V. Pchelkina , I. A. Nekrasov , Th. Pruschke , A. Sekiyama , S. Suga , V. I. Anisimov , D. Vollhardt

We investigate the nature of the 5$f$ electrons in the unconventional odd-parity superconductor UTe$_2$, focusing on the degree of covalency, localization versus itinerancy, and dominant electronic configuration. This is achieved using…

We present a comprehensive investigation of the electrical and thermal conductivity of iron under high pressures at ambient temperature, employing the real-time formulation of time-dependent density functional theory (RT-TDDFT).…

Materials Science · Physics 2025-02-14 Kushal Ramakrishna , Mani Lokamani , Andrew Baczewski , Jan Vorberger , Attila Cangi

The metallic oxide RuO$_2$ has emerged as a promising altermagnet candidate, owing to reports of this material hosting antiferromagnetic ordering accompanied by a spin-split electronic band structure characteristic of time-reversal…

Recent studies reveal a pressure induced transition from a paramagnetic tetragonal phase (T) to a collapsed tetragonal phase (CT) in $CaFe_2As_2$, which was found to be superconducting with non-hydrostatic pressure at low temperature. We…

Superconductivity · Physics 2015-06-22 Subhasish Mandal , R. E. Cohen , K. Haule

We predict that the anti-ferromagnetic (AFM) magnetic structure of delafossite PdCrO$_2$ has a staggered chirality with the double-layer periodicity along the $z$-axis with intriguing magnetic anisotropy. We study the electronic and…

Strongly Correlated Electrons · Physics 2020-01-22 Changhwi Park , Jaejun Yu

Excitement about the magnetic and electronic properties of RuO$_2$ is growing, fueled by reports of antiferromagnetism, strain-induced superconductivity, and its recent classification as a member of a newly proposed magnetic class,…

The use of effective local Coulomb interactions that are dynamical, that is, frequency-dependent, is an efficient tool to describe the effect of long-range Coulomb interactions and screening thereof in solids. The dynamical character of the…

Strongly Correlated Electrons · Physics 2015-12-29 Silke Biermann , Ambroise van Roekeghem

Using first-principal density functional theory (DFT) we explained the importance of pseudopotential for decribing the electronic and vibrational properties of rutile TiO2 (R-TiO2). Calculations were performed using the generalized gradient…

Chemical Physics · Physics 2018-11-12 Sugata Chowdhury , Nacole King , Winnie Wong-Ng

Dynamical mean-field theory (DMFT) is a non-perturbative technique for the investigation of correlated electron systems. Its combination with the local density approximation (LDA) has recently led to a material-specific computational scheme…

Strongly Correlated Electrons · Physics 2009-11-10 D. Vollhardt , K. Held , G. Keller , R. Bulla , Th. Pruschke , I. A. Nekrasov , V. I. Anisimov

The influence of correlation effects on the orbital moments for transition metals and their alloys is studied by first-principle relativistic Density Functional Theory in combination with the Dynamical Mean-Field Theory. In contrast to the…

Strongly Correlated Electrons · Physics 2009-11-13 S. Chadov , J. Minár , M. I. Katsnelson , H. Ebert , D. Ködderitzsch , A. I. Lichtenstein

The potential applications of dilute magnetic oxides (DMOs) in magneto-optic and spintronic devices have attracted significant attention, although understanding their magnetic behavior is complex due to intricate interactions of intrinsic…

Materials Science · Physics 2025-02-13 Hemant Arora , Atul Bandyopadhyay , Arup Samanta

Although the density functional theory plus Hubbard $U$ correction method (DFT+U) is broadly used to study electronic structure of strongly correlated materials, the extension of this method to electron-phonon $g$ matrices has received…

Strongly Correlated Electrons · Physics 2026-05-21 Jiale Chen , Youyou Tu , Chengliang Xia , Jin Zhao , Hanghui Chen

This study leverages density function theory (DFT) accompanied with Boltzmann transport equation approaches to investigate the electronic mobility as a function of inorganic substitution and functionalization in a thermally stable UiO-66…

Materials Science · Physics 2018-05-09 Terence D. Musho , Alhassan S. Yasin