I’m just playing around with the API and data, and noticed many incorrect band gaps being reported.
For example, I get band gaps of 0.189 eV and 0.194 eV for GaAs, whereas wikipedia reports a band gap of 1.424 eV.
I know the MP Calculations Manual states that the DFT calculations underestimate band gap, as much as 50% from literature. But, in the above example, this error is a whole order of magnitude off.
Am I misinterpreting what’s being reported by MP and the API?