FUNCTIONAL NAME: OB-PW
This is a CORRELATION Density Functional Theory functional
FUNCTIONAL FAMILY: LDA
DESCRIPTION: Ortiz & Ballone (PW parametrization)
REFERENCES
G. Ortiz and P. Ballone., Phys. Rev. B 50, 1391 (1994)
DOI: 10.1103/PhysRevB.50.1391
G. Ortiz and P. Ballone., Phys. Rev. B 56, 9970 (1997)
DOI: 10.1103/PhysRevB.56.9970
J. P. Perdew and Y. Wang., Phys. Rev. B 45, 13244 (1992)
DOI: 10.1103/PhysRevB.45.13244
Added extra digits to some constants as in the PBE routine (http://dft.rutgers.edu/pubs/PBE.asc).