libvdwxc: a library for exchange-correlation functionals in the vdW-DF family
Journal article, 2017

We present libvdwxc, a general library for evaluating the energy and potential for the family of vdW-DF exchange-correlation functionals. libvdwxc is written in C and provides an efficient implementation of the vdW-DF method and can be interfaced with various general-purpose DFT codes. Currently, the GPAW and Octopus codes implement interfaces to libvdwxc. The present implementation emphasizes scalability and parallel performance, and thereby enables ab initio calculations of nanometer-scale complexes. The numerical accuracy is bench-marked on the S22 test set whereas parallel performance is benchmarked on ligand-protected gold nanoparticles (Au-144(SC11NH25)(60)) up to 9696 atoms.

van der Waals forces

density functional theory


nonlocal correlation

parallel computation


A. H. Larsen

University of the Basque Country (UPV/EHU)

Mikael Juhani Kuisma

Chalmers, Physics, Materials and Surface Theory

Joakim Löfgren

Chalmers, Physics, Materials and Surface Theory

Y. Pouillon

University of the Basque Country (UPV/EHU)

Paul Erhart

Chalmers, Physics, Materials and Surface Theory

Per Hyldgaard

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Modelling and Simulation in Materials Science and Engineering

0965-0393 (ISSN) 1361-651X (eISSN)

Vol. 25 6

Subject Categories

Materials Engineering

Physical Sciences

Areas of Advance


Materials Science


C3SE (Chalmers Centre for Computational Science and Engineering)



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