WIEN2k
The WIEN2k package is a computer program written in Fortran which performs quantum mechanical calculations on periodic solids. It uses the full-potential (linearized) augmented plane-wave and local-orbitals [FP-(L)APW+lo] basis set to solve the Kohn–Sham equations of density functional theory.
WIEN2k was originally developed by Peter Blaha and Karlheinz Schwarz from the Institute of Materials Chemistry of the Vienna University of Technology. The first public release of the code was done in 1990.[4] Then, the next releases were WIEN93, WIEN97, and WIEN2k.[5] The latest version WIEN2k_23.2 was released in February 2023.[6] It has been licensed by more than 3400 user groups and has about 16000 citations on Google scholar (Blaha WIEN2k).
WIEN2k uses density functional theory to calculate the electronic structure of a solid. It is based on the most accurate scheme for the calculation of the bond structure-the full potential energy (linear) augmented plane wave ((L) APW) + local orbit (lo) method. WIEN2k uses an all-electronic solution, including relativistic terms.