Implementation of analytical Hartree-Fock gradients for periodic systems
Computational Physics
2009-11-07 v1
Abstract
We describe the implementation of analytical Hartree-Fock gradients for periodic systems in the code CRYSTAL, emphasizing the technical aspects of this task. The code is now capable of calculating analytical derivatives with respect to nuclear coordinates for systems periodic in 0, 1, 2 and 3 dimensions (i.e. molecules, polymers, slabs and solids). Both closed-shell restricted and unrestricted Hartree-Fock gradients have been implemented. A comparison with numerical derivatives shows that the forces are highly accurate.
Keywords
Cite
@article{arxiv.physics/0102049,
title = {Implementation of analytical Hartree-Fock gradients for periodic systems},
author = {K. Doll},
journal= {arXiv preprint arXiv:physics/0102049},
year = {2009}
}
Comments
accepted by Comp. Phys. Comm