I'm using vasp.5.3.5 and having problem when calculating dielectric constant with spin-orbit coupling. While the band structure w/ spin-orbit is almost identical to that w/o spin-orbit. The dielectrics are completely different.
Any explanation for the difference?
Thanks
To calculate epsilon I use:
LOPTICS = T
LRPA = T
for spin-orbit calculation I add:
LSORBIT = T
The link below is the imaginary part of epsilon.
![Image](http://i489.photobucket.com/albums/rr260/avss_album/si_epsilon.png)
<span class='smallblacktext'>[ Edited ]</span>