By calculating band structure of ZnO using VNL, I got band structrue in which energy is distributed from negative to positive and 0 energy is in between them. Fermi energy is negative nearly -4.02.
Please tell me that in the result browser's output band structure figure, 0 energy corresponds to fermi energy or value at -4.02 is femi energy?
If it is at -4.02 than I must shift whole band structure by setting fermi energy 0.