Parameters for calculating rigidAtomicField

In nanodcal, rigidAtomicField are the terms of the Hamiltonian that need to be calculated only once, e.g. outside the self-consistent loop.

calculation.rigidAtomicField.[none]

key word	:	calculation.rigidAtomicField.[none]
default value	:
description	:	It is self-contained and no parameter needed for
		the calculation. rigidAtomicField are the potentials
		which need to be computed only once, outside the
		DFT self-consistent field (SCF) cycle.