We know that T=0K is not allowed for calculating the Nose-Hoover thermostat. Explicitly (fix nvt command — LAMMPS documentation):
" For the temp keyword, the final Tstop cannot be 0.0 since it would make the external T = 0.0 at some timestep during the simulation which is not allowed in the Nose/Hoover formulation."
Then, what is the lowest temperature we can perform simulations with LAMMPS using the Nose/Hoover formulation?