#
#  MATSUI-library of potentials for GULP
#
#  from S.Tsuneyuki,M.Tsukada,H.Aoki and Y.Matsui 1988
#  reference Phys.Rev.Lett. 61 7 869-872 1988
#
#  Note that cutoffs may NOT refer to that published 
#
#  All potential parameters are from ab initio Hartree-Fock

species
Si core  2.400
O  core -1.200

buckingham
Si core Si core  see equation 1 table 1 in ref
Si core O  core  see equation 1 table 1 in ref
O  core O  core  see equation 1 table 1 in ref