Molecular simulations with in-deMon2k QM/MM, a tutorial-review

A de La Lande, A Alvarez-Ibarra, K Hasnaoui… - Molecules, 2019 - mdpi.com
deMon2k is a readily available program specialized in Density Functional Theory (DFT)
simulations within the framework of Auxiliary DFT. This article is intended as a tutorial-review …

First-principles simulations of biological molecules subjected to ionizing radiation

KA Omar, K Hasnaoui… - Annual Review of Physical …, 2021 - annualreviews.org
Ionizing rays cause damage to genomes, proteins, and signaling pathways that normally
regulate cell activity, with harmful consequences such as accelerated aging, tumors, and …

Current status of deMon2k for the investigation of the early stages of matter irradiation by time-dependent DFT approaches

KA Omar, FA Korsaye, R Tandiana, D Tolu… - The European Physical …, 2023 - Springer
We summarize in this article the recent progress made in our laboratories in the
development of numerical approaches dedicated to investigating ultrafast physicochemical …

Multicomponent density functional theory with density fitting

D Mejía-Rodríguez, A de la Lande - The Journal of Chemical Physics, 2019 - pubs.aip.org
Multicomponent Density Functional Theory (MDFT) is a promising methodology to
incorporate nuclear quantum effects, such as zero-point energy or tunneling, or to simulate …

Variational density fitting with a Krylov subspace method

JN Pedroza-Montero, JL Morales… - Journal of Chemical …, 2020 - ACS Publications
In this work, we present the implementation of a variational density fitting methodology that
uses iterative linear algebra for solving the associated system of linear equations. It is well …

Self-Consistent Auxiliary Density Perturbation Theory

FA Delesma, RI Delgado-Venegas… - Journal of Chemical …, 2021 - ACS Publications
The working equations for the extension of auxiliary density perturbation theory (ADPT) to
hybrid functionals, employing the variational fitting of the Fock potential, are derived. The …

Reduced-scaling approach for configuration interaction singles and time-dependent density functional theory calculations using hybrid functionals

D Mester, M Kállay - Journal of Chemical Theory and …, 2019 - ACS Publications
An approximation is presented which can efficiently decrease the computational expenses
of configuration interaction singles (CIS) and time-dependent density functional theory …

Reliability and performances of real-time time-dependent auxiliary density functional theory

R Tandiana, C Clavaguéra, K Hasnaoui… - Theoretical Chemistry …, 2021 - Springer
We recently adapted the Auxiliary DFT framework as implemented in deMon2k to the
simulation of time-dependent problems via the Runge and Gross equations. Our …

Magnetic Exchange Coupling in Macrocyclic Cobalt (II) Complexes: The Influence of Bridging Ligands and Choice of the Computational Methodologies

AK Almansori, K AI‐Ameed, M Obies… - …, 2023 - Wiley Online Library
Exchange‐coupled spin states of cobalt complexes represent the key to understanding the
challenging nature of the magnetism of cobalt dimer. In this study, we introduce a …

Analytic gradients for local density fitting Hartree–Fock and Kohn–Sham methods

J Csóka, M Kállay - The Journal of Chemical Physics, 2023 - pubs.aip.org
We present analytic gradients for local density fitting Hartree–Fock (HF) and hybrid Kohn–
Sham (KS) density functional methods. Due to the non-variational nature of the local fitting …