QuantumATK Forum

QuantumATK => General Questions and Answers => Topic started by: ams_nanolab on February 20, 2017, 14:47

Title: Local bandstrcture
Post by: ams_nanolab on February 20, 2017, 14:47

Hi in the screenshot, what does sigma stand for?
Is it standard error? SD ?

Title: Re: Local bandstrcture
Post by: Jess Wellendorff on February 21, 2017, 09:00

Yes, "sigma" is the RMS deviation between the fitted nonparabolic band and the actual band (in units of eV). The expression is:

Code

sigma = sqrt( mean( (energies_nonparabolic - energies_band)**2 ) )