Software Download

PARSEC is made available to the community free of charge, under the GNU General Public License. But please be aware that this code comes as is. We make no warranty with respect to any bugs. And we offer no support, help request will likely be ignored. Please read the General Public License . Online documentation and articles already give plenty of information.

A trial version of the code (PARSEC 1.1) can be downloaded here . The newest stable version can be obtained upon request.

If you publish work where this code was used, please make reference to the following two articles:

  • J. R. Chelikowsky, N. Troullier, and Y. Saad Finite-difference-pseudopotential method: Electronic structure calculations without a basis , Phys. Rev. Lett. 72, 1240 (1994).

  • J. R. Chelikowsky The pseudopotential-density functional method applied to nanostructures , J. of Phys. D 33, R33 (2000).

    • If periodic boundary conditions are used, please make reference to the following article as well:

  • M. M. G. Alemany, M. Jain, L. Kronik, and J. R. Chelikowsky Real-space pseudopotential method for computing the electronic properties of periodic systems Phys. Rev. B 69, 075101 (2004).

    • Use of the L-BFGS package, part of PARSEC, is also subject to conditions of use.