activity
20072022
most citedReal-space grids and the Octopus code as tools for the development of new simulation approaches for electronic systems

536 citations · 1.7k across the 19 of their papers we have counts for

collaborators

19 papers

cond-mat.mtrl-sci2022

Electron dynamics in extended systems within real-time time-dependent density functional theory

Alina Kononov, Cheng-Wei Lee, Tatiane Pereira dos Santos +10

Due to a beneficial balance of computational cost and accuracy, real-time time-dependent density functional theory has emerged as a promising first-principles framework to describe…

cond-mat.mtrl-sci2021★ 2 cited

INQ, a modern GPU-accelerated computational framework for (time-dependent) density functional theory

Xavier Andrade, Chaitanya Das Pemmaraju, Alexey Kartsev +6

We present INQ, a new implementation of density functional theory (DFT) and time-dependent DFT (TDDFT) written from scratch to work on graphical processing units (GPUs). Besides GP…

physics.comp-ph2019★ 415 cited

Octopus, a computational framework for exploring light-driven phenomena and quantum dynamics in extended and finite systems

Nicolas Tancogne-Dejean, Micael J. T. Oliveira, Xavier Andrade +31

Over the last years extraordinary advances in experimental and theoretical tools have allowed us to monitor and control matter at short time and atomic scales with a high-degree of…

cond-mat.mtrl-sci2019★ 14 cited

Effect of chemical disorder on the electronic stopping of solid solution alloys

Edwin E. Quashie, Rafi Ullah, Xavier Andrade +1

The electronic stopping power of nickel-based equiatomic solid solutions alloys NiCr, NiFe and NiCo for protons and alpha projectiles is investigated in detail using real-time time…

cond-mat.mtrl-sci2017★ 2 cited

Non-linear conductivity of metals from real-time quantum simulations

Xavier Andrade, Sebastien Hamel, Alfredo A. Correa

We simulate bulk materials under strong currents by following in real-time the dynamics of the electrons under an electric field. By changing the intensity of the electric field, o…

physics.chem-ph2016★ 27 cited

Self-interaction effects on charge-transfer collisions

Edwin E. Quashie, Bidhan C. Saha, Xavier Andrade +1

In this article, we investigate the role of the self-interaction error in the simulation of collisions using time-dependent density functional theory (TDDFT) and Ehrenfest dynamics…