Uniaxial Tensile deformation of Graphene sheet at 0 Kelvin

Hello All,
I need some idea to conduct a box deform of a graphene sheet at 0 K to get out of the finite temperature based entropic effects during evaluation of free energy density history as a post processing. What kind of ensemble I should choose and what parameters I should focus on to conduct this kind of ideal simulation. Thanks a lot in advance.
Yours Truly
Anubhav Roy

The fix deform command can deform the simulation box
in many different ways. The 0K part of your Q is independent,
since fix deform does not change the velocities. In
between runs (or in a loop or as part of the run every
command) you can use the change_box command to
do similar deformations stepwise as well.