koopmans: An Open-Source Package for Accurately and Efficiently Predicting Spectral Properties with Koopmans Functionals

EB Linscott, N Colonna, R De Gennaro… - Journal of Chemical …, 2023 - ACS Publications
Over the past decade we have developed Koopmans functionals, a computationally efficient
approach for predicting spectral properties with an orbital-density-dependent functional …

Mn-based hydride perovskites XMnH3 (X= K, Li): A DFT study for physical properties, and hydrogen storage capability

M Usman, D Pan, MK Masood, C Zhang - Solid State Communications, 2024 - Elsevier
The present study utilizes First-principles calculations to investigate the physical properties
of Mn-based perovskite-type hydrides XMnH 3 (X= K, Li) including electronic, magnetic, and …

Koopmans spectral functionals in periodic boundary conditions

N Colonna, R De Gennaro, E Linscott… - Journal of Chemical …, 2022 - ACS Publications
Koopmans spectral functionals aim to describe simultaneously ground-state properties and
charged excitations of atoms, molecules, nanostructures, and periodic crystals. This is …

Nonempirical prediction of the length-dependent ionization potential in molecular chains

G Ohad, M Hartstein, T Gould, JB Neaton… - Journal of Chemical …, 2024 - ACS Publications
The ionization potential of molecular chains is well-known to be a tunable nanoscale
property that exhibits clear quantum confinement effects. State-of-the-art methods can …

Automated mixing of maximally localized Wannier functions into target manifolds

J Qiao, G Pizzi, N Marzari - npj Computational Materials, 2023 - nature.com
Abstract Maximally localized Wannier functions (MLWFs) are widely used in electronic-
structure calculations. We have recently developed automated approaches to generate …

The Wannier-Functions Software Ecosystem for Materials Simulations

A Marrazzo, S Beck, ER Margine, N Marzari… - arXiv preprint arXiv …, 2023 - arxiv.org
Over the last two decades, following the early developments on maximally-localized
Wannier functions, an ecosystem of electronic-structure simulation techniques and software …

Spin-dependent interactions in orbital-density-dependent functionals: Noncollinear Koopmans spectral functionals

A Marrazzo, N Colonna - Physical Review Research, 2024 - APS
The presence of spin-orbit coupling or noncollinear magnetic spin states can have dramatic
effects on the ground-state and spectral properties of materials, in particular on the band …

A DFT investigation of Sc-based perovskite-type hydrides XScH3 (X = K, Na) for hydrogen storage application

H Shabbir, M Usman, JU Rehman, D Pan… - Journal of …, 2024 - Springer
The current study delves into the physical properties and hydrogen storage capabilities of
XScH3 (X= K, Na) using the CASTEP code by leveraging the GGA-PBE method. The …

Optical absorption spectra of metal oxides from time-dependent density functional theory and many-body perturbation theory based on optimally-tuned hybrid …

G Ohad, SE Gant, D Wing, JB Haber… - Physical Review …, 2023 - APS
Using both time-dependent density functional theory (TDDFT) and the “single-shot” GW plus
Bethe-Salpeter equation (GW-BSE) approach, we compute optical band gaps and optical …

Predicting electronic screening for fast Koopmans spectral functional calculations

Y Schubert, S Luber, N Marzari, E Linscott - npj Computational …, 2024 - nature.com
Koopmans spectral functionals are a powerful extension of Kohn-Sham density-functional
theory (DFT) that enables the prediction of spectral properties with state-of-the-art accuracy …