hi all,

I want to use the following type of potential between atoms of type A and B.

E = 4*epsilon*[(sigma/r)^12-C(A,B)*(sigma/r)^6], where C(A,B)=1 if A

and B are same,

and C(A,B)=C otherwise. I want to play with this value of C and see

how my simulation

results depend on its value. Can somebody give some information on how to do

this in LAMMPS.

regards,

Gopala