CP2K is a free and open source quantum chemistry and solid state physics software package that can perform atomistic simulations of solid state, liquid, molecular, periodic, material, crystal, and biological systems.
It’s especially aimed at massively parallel and linear scaling electronic structure methods and state-of-the-art ab-initio molecular dynamics (AIMD) simulations.
CP2K is optimized for the mixed Gaussian and Plane-Waves (GPW) method based on pseudopotentials, but is able to run all-electron or pure plane-wave/Gaussian calculations.
Features include:
Ab-initio electronic structure theory methods using the QUICKSTEP module
- Density-Functional Theory (DFT) energies and forces.
- Hartree-Fock (HF) energies and forces.
- Moeller-Plesset 2nd order perturbation theory (MP2) energies and forces.
- Random Phase Approximation (RPA) energies.
- Gas phase or Periodic boundary conditions (PBC).
- Basis sets include various standard Gaussian-Type Orbitals (GTOs), Pseudopotential plane-waves (PW), and a mixed Gaussian and (augmented) plane wave approach (GPW/GAPW).
- Norm-conserving, seperable Goedecker-Teter-Hutter (GTH) and non-linear core corrected (NLCC) pseudopotentials, or all-electron calculations.
- Local Density Approximation (LDA) XC functionals including SVWN3, SVWN5, PW92 and PADE.
- Gradient-corrected (GGA) XC functionals including BLYP, BP86, PW91, PBE and HCTH120 as well as the meta-GGA XC functional TPSS.
- Hybrid XC functionals with exact Hartree-Fock Exchange (HFX) including B3LYP, PBE0 and MCY3.
- Double-hybrid XC functionals including B2PLYP and B2GPPLYP.
- Additional XC functionals via LibXC.
- Dispersion corrections via DFT-D2 and DFT-D3 pair-potential models.
- Non-local van der Waals corrections for XC functionals including B88-vdW, PBE-vdW and B97X-D.
- DFT+U (Hubbard) correction.
- Density-Fitting for DFT via Bloechl or Density Derived Atomic Point Charges (DDAPC) charges, for HFX via Auxiliary Density Matrix Methods (ADMM) and for MP2/RPA via Resolution-of-identity (RI).
- Sparse matrix and prescreening techniques for linear-scaling Kohn-Sham (KS) matrix computation.
- Orbital Transformation (OT) or Direct Inversion of the iterative subspace (DIIS) self-consistent field (SCF) minimizer.
- Local Resolution-of-Identity Projector Augmented Wave method (LRIGPW).
- Absolutely Localized Molecular Orbitals SCF (ALMO-SCF) energies for linear scaling of molecular systems.
- Excited states via time-dependent density-functional perturbation theory (TDDFPT).
Ab-initio Molecular Dynamics
- Born-Oppenheimer Molecular Dynamics (BOMD).
- Ehrenfest Molecular Dynamics (EMD).
- PS extrapolation of initial wavefunction.
- Time-reversible Always Stable Predictor-Corrector (ASPC) integrator.
- Approximate Car-Parrinello like Langevin Born-Oppenheimer Molecular Dynamics (Second-Generation Car-Parrinello Molecular Dynamics).
Mixed quantum-classical (QM/MM) simulations
- Real-space multigrid approach for the evaluation of the Coulomb interactions between the QM and the MM part.
- Linear-scaling electrostatic coupling treating of periodic boundary conditions.
- Adaptive QM/MM.
Other Features
- Single-point energies, geometry optimizations and frequency calculations.
Several nudged-elastic band (NEB) algorithms (B-NEB, IT-NEB, CI-NEB, D-NEB) for minimum energy path (MEP) calculations. - Global optimization of geometries.
- Solvation via the Self-Consistent Continuum Solvation (SCCS) model.
- Semi-Empirical calculations including the AM1, RM1, PM3, MNDO, MNDO-d, PNNL and PM6 parametrizations, density-functional tight-binding (DFTB) and self-consistent-polarization tight-binding (SCP-TB), with or without periodic boundary conditions.
- Classical Molecular Dynamics (MD) simulations in microcanonical ensemble (NVE) or canonical ensmble (NVT) with Nose-Hover and canonical sampling through velocity rescaling (CSVR) thermostats.
- Metadynamics including well-tempered Metadynamics for Free Energy calculations.
- Classical Force-Field (MM) simulations.
- Monte-Carlo (MC) KS-DFT simulations.
- Static (e.g. spectra) and dynamical (e.g. diffusion) properties.
- ATOM code for pseudopotential generation.
- Integrated molecular basis set optimization.
Website: www.cp2k.org
Support: GitHub
Developer: CP2K developers group
License: GNU General Public License v2.0
CP2K is written in Fortran. Learn Fortran with our recommended free books and free tutorials.
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