Hello

I calculated the band gap of CaMnO3 by following computational details of FP Zhang et al., 

http://www.sciencedirect.com/science/article/pii/S0925838810023297

Which the calculation use same software. I have results Eg = 0.895 eV, but Ref. Eg = 0.7 eV Why not correspond ? 

http://www.sciencedirect.com/science/article/pii/S0925838810023297

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