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Hi, I am personally not familiar with this pair potential and I don’t think we have anything like that in OpenKIM. I looked through the list of pair_styles and couldn’t find anything: pair_style command — LAMMPS documentation
You may want to ask in the LAMMPS forum, I would recommend providing more background regarding the source. If LAMMPS doesn’t support it natively, you could always use pair_style hybrid/overlay to combine pair_style coul/long with pair_style table or pair_style python to encode the non-Coulombic term yourself.