View source for Physics:Computational chemical methods in solid-state physics

'''Computational chemical methods in [[Physics:Solid-state physics|solid-state physics]]''' follow the same approach as they do for molecules, but with two differences. First, the translational symmetry of the solid has to be utilised, and second, it is possible to use completely delocalised basis functions such as plane waves as an alternative to the molecular atom-centered [[Chemistry:Basis set|basis functions]].  The electronic structure of a crystal is in general described by a [[Physics:Band structure|band structure]], which defines the energies of electron orbitals for each point in the [[Physics:Brillouin zone|Brillouin zone]]. Ab initio and semi-empirical calculations yield orbital energies, therefore they can be applied to band structure calculations. Since it is time-consuming to calculate the energy for a molecule, it is even more time-consuming to calculate them for the entire list of points in the Brillouin zone.
Calculations can use the Hartree&ndash;Fock method, some post-Hartree&ndash;Fock methods, particularly Møller&ndash;Plesset perturbation theory to second order (MP2) and [[Density functional theory|density functional theory]] (DFT).

==See also==
*List of quantum chemistry and solid-state physics software

==References==
*''Computational Chemistry'', David Young, Wiley-Interscience, 2001. Chapter 41, pg 318. The extensive references in that chapter provide further reading on this topic.
* ''Computational Chemistry and molecular modeling Principles and applications'', K.I. Ramachandran, G.Deepa and Krishnan namboori P.K., [http://www.amrita.edu/publication/computational-chemistry-and-molecular-modeling] Springer-Verlag GmbH {{ISBN|978-3-540-77302-3}}

[[Category:Computational chemistry]]
[[Category:Theoretical chemistry]]
[[Category:Computational science]]
[[Category:Condensed matter physics]]
[[Category:Computational physics]]



fr:Chimie numérique#Méthodes de chimie numérique dans les systèmes solides

{{Sourceattribution|Computational chemical methods in solid-state physics}}