Dear LAMMPS users,
According to the tersoff’s paper on potential, I think the formula in " http://lammps.sandia.gov/doc/pair_tersoff.html " is only valid for case of 1 component system, i.e. Si system . But, for case of multi-component system such as SiC, Tersoff-2 should be used . In the website however, it used  for SiC which I think it is incorrect. Any comment please ?
Thanks in advance,
 Tersoff, J. (1988). Empirical interatomic potential for silicon with improved elastic properties. Physical Review B, 38(14), 9902.
 Tersoff, J. (1989). Modeling solid-state chemistry: Interatomic potentials for multicomponent systems. Physical Review B, 39(8), 5566.