Up: Specification of Potentials
These types specify Sutton-Chen potentials of the appropriate
Three additional real parameters must be specified using the PARAMS keyword
in the odata file,
namely Sutton and Chen's ε, c and a, in this order.
The nearest neighbour distance in the prevailing unit system is
a = corresponds to a unit system where the bulk nearest-neighbour distance is 1.
Subroutines used: scdiff.