Solving the strong-correlation problem in materials

E Pavarini - La Rivista del Nuovo Cimento, 2021 - Springer
This article is a short introduction to the modern computational techniques used to tackle the
many-body problem in materials. The aim is to present the basic ideas, using simple …

Limited Ferromagnetic Interactions in Monolayers of MPS3 (M = Mn and Ni)

C Autieri, G Cuono, C Noce, M Rybak… - The Journal of …, 2022 - ACS Publications
We present a systematic study of the electronic and magnetic properties of two-dimensional
ordered alloys, consisting of two representative hosts (MnPS3 and NiPS3) of transition metal …

[HTML][HTML] Orbital-selective altermagnetism and correlation-enhanced spin-splitting in strongly-correlated transition metal oxides

G Cuono, RM Sattigeri, J Skolimowski… - Journal of Magnetism and …, 2023 - Elsevier
We investigate the altermagnetic properties of strongly-correlated transition metal oxides
considering the family of the quasi two-dimensional A 2 BO 4 and three-dimensional ABO 3 …

Origins versus fingerprints of the Jahn-Teller effect in -electron perovskites

J Varignon, M Bibes, A Zunger - Physical Review Research, 2019 - APS
The Jahn-Teller distortion that can remove electronic degeneracies in partially occupied
states and results in systematic atomic displacements is a common underlying feature to …

: A true Kugel-Khomskii system

XJ Zhang, E Koch, E Pavarini - Physical Review B, 2022 - APS
We show that the t 2 g 2 perovskite LaVO 3, in its orthorhombic phase, is a rare case of a
system hosting an orbital-ordering Kugel'-Khomskii phase transition rather than being …

[HTML][HTML] Orbital order and ferromagnetism in LaMn1− xGaxO3

C Autieri, M Cuoco, G Cuono, S Picozzi… - Physica B: Condensed …, 2023 - Elsevier
We study from first principles the magnetic, electronic, orbital and structural properties of the
LaMnO 3 doped with gallium replacing the Mn-site. The gallium doping reduces the Jahn …

First principles study of structural, magnetic and electronic properties of CrAs

C Autieri, C Noce - Philosophical Magazine, 2017 - Taylor & Francis
We report ab initio density functional calculations of the structural and magnetic properties,
and the electronic structure of CrAs. To simulate the observed pressure-driven experimental …

Spin–orbit coupling effects on the electronic properties of the pressure-induced superconductor CrAs

G Cuono, C Autieri, G Guarnaccia, A Avella… - The European Physical …, 2019 - Springer
We present the effects of spin-orbit coupling on the low-energy bands and Fermi surface of
the recently discovered pressure-induced superconductor CrAs. We apply the Löwdin down …

Tight-binding calculation of the magnetic moment of CrAs under pressure

C Autieri, G Cuono, F Forte… - Journal of Physics …, 2018 - iopscience.iop.org
We analyze the evolution of the local magnetic moment of the newly discovered pressure-
induced superconductor CrAs, as a function of the applied pressure. Our theoretical method …

Low energy bands and transport properties of chromium arsenide

C Autieri, G Cuono, F Forte… - Journal of Physics …, 2017 - iopscience.iop.org
We apply a method that combines the tight-binding approximation and the Löwdin down-
folding procedure to evaluate the electronic band structure of the newly discovered pressure …