If your k-mesh is not dense enough such that there is no k-point
at the VBM and/or CBM or close to, then :GAP will be larger than
the band gap from a band structure.

F. Tran

On Wed, 9 Dec 2015, Muhammad Sajjad wrote:

Dear AllDoes the command "grep GAP *.scf" gives correct band gap value? as when 
I found the bottom of conduction band in xmgrace it is higher. (bottom of CB is
read correctly by opening the plot in xmgrace and then read the date by editing 
in text editor).

--
Kind Regards
Muhammad Sajjad 
Post Doctoral Fellow
KAUST, KSA.

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