MEAM problem

Dear lammps-users,
When I want to code a meam potential using parameters in this paper( I don’t know which represents δ and when there are two δs, δ+ and δ-. How can I code these?

Thanks for your help in advance,
Zifan Liu

I’m not certain wether Lammps support these modifications of the original 2NN Meam, but you could have a look at the parameters erose_form as well as attrac and repuls.
Also, the authors do not say that they are using Lammps, and the documentation only report a correction of the erose expression in 2009, whereas your article is from 2012. So maybe you would have to look into the source code. Julien