Here is the same band as used in "ziman", but now containing electrons up to a Fermi energy of about 5 eV. Both electric and magnetic fields are present. Click the run button to see how complicated this can be! Is there any way to get a simpler view of this mess?
(As in "drude", a white dot is left on the screen for several successive display steps to give a sense of the local trajectories. The spacing of successive dots depends both on parameter choices for the system and on the display speed.)