Dear All, I have a silly question about the external electric field:
In the coordinate system of my unit cell, my molecule is centered around the origin. It seems that Siesta adds a term to the Hamiltonian of the form: Ex*(x-x0)+Ey*(y-y0)+Ez*(z-z0), in each unit cell (a saw tooth potential) Is that right? If yes, then what are the: (x0,y0,z0)? Is it the unit cell origin or is it something else? Thank you so much.
