I'm a little confused how to make a VASP input file to calculate the energy for the isolated atom:
Do I need to change the lattice parameter of my unit cell or can keep the value for the whole system?
If I have 4 atoms of one type in my unit cell, can I consider the position of any of them or must it be in the middle of the unit cell?
I observed that some people use K point set $1\times1\times1$ for calculating a single atom. Is it necessary to use this set or can I use the normal K points set that is used at the time of convergence?
To boil it down to one question, what do I need to change about typical VASP input file to calculate the energy of a single atom?