I am new to Materials Project and also to surface chemistry.
I am trying to reproduce the surface energy of diamond (C-mp_66) along (100) Miller Index plane using the methods discussed in VASP Surface Science tutorials. I find the POSCAR for the unit cell has different lattice parameters (along x- and y-) when compared to the (100) surface slab. I do not understand the reason.
Also, could you provide the INCAR file for slab surface energy calculation?