<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 14pt; color: #000000"><div>Dear Wien users,</div><div><span style="font-family: Helvetica, Arial, sans-serif; font-size: 16px; background-color: #ffffff;" data-mce-style="font-family: Helvetica, Arial, sans-serif; font-size: 16px; background-color: #ffffff;">I have searched in the archives to understand why the fermi level is at the maximum of the valence band in band structure plot of a semiconductor, I found that it was an arbitrary choice but untill now i can't explain this from a physical point of view since for me the fermi level must be in the middle of the gap.</span></div><div><span style="font-family: Helvetica, Arial, sans-serif; font-size: 16px; background-color: #ffffff;" data-mce-style="font-family: Helvetica, Arial, sans-serif; font-size: 16px; background-color: #ffffff;"><br></span></div><div><span style="font-family: Helvetica, Arial, sans-serif; font-size: 16px; background-color: #ffffff;" data-mce-style="font-family: Helvetica, Arial, sans-serif; font-size: 16px; background-color: #ffffff;">Thank you for your help</span></div></div></body></html>