[Wien] Comparison between bulk and slab 2P core-levels

[Michael Gurnett]

Hello

I¨ve calculated a core-levels for a slab of Si, and found that the bulk like core levels were approximaely -6.42 ryd. However, when I do the same calculation for an infinite crystal the core-levels are found to be -6.22. This difference is comparible with the work function (0.22 for the work function against 0.2). Is the work function the reason for this difference or is is coincidental. If it's not the work function, what might it be.

Thank you

Michael
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