local_potential_* parameters

An arbitrary local potential can be implemented using parameters local_potential_*. The format looks like

[model]
local_potential_matrix = {0: 'pot0.txt', 1: 'pot1.txt'}
local_potential_factor = 0.01

Here, local_potential_matrix describes, in the python dictionary format, a set of the inequivalent shell index ish and the filename which defines the local potential matrix. The parameter local_potential_factor defines a prefactor to the potential matrix.

For example, the Zeeman term along z-axis for S=1/2 is represented by

$ cat pot0.txt
# spin orb1 orb2  Re Im
0 0 0   0.5 0.
1 0 0  -0.5 0.

and the magnetic field is specified by local_potential_factor.