I'm trying to set different periodic lengths in LAMMPS. My idea is to use the region command. For example, the following:
region box block 0 10.0 0 10.0 0 10.0 # set up a 10 x 10 x 10 periodic cell
would give a 10 x 10 x 10 periodic box of atoms. If I wanted to set a different periodic length in a given direction, would simply changing the length from 10 to something else do that, or is a different command necessary. Note that I don't want to move the periodic boundary dynamically during the simulation, I just want to see how the total energy of the system changes as a function of the periodic length.