[Pw_forum] Question on charge density plot

[Paolo Giannozzi]

On Mon, 26 Jul 2004, Subhradip Ghosh wrote:

> I understand is that using chdens we only get rho in G-space
> and plotrho draws the contours of rho(G)

not really: chdens produces rho(r) in the selected region of space
and plotrho draws contours of rho(r)

> Also, what units are these charge densities?

1/(Bohr radii)^3 : the charge density yields the number of electrons
(not the total charge) when integrated over the unit cell.

Paolo