The word optical here means that e m radiations in the frequency range corresponding to optical spectum are incident on the semiconductor, causing transition of electrons (hence electronic) from the valence to conduction band.
Date: Thu, 29 Oct 2009 10:26:29 +0530 From: shamik...@gmail.com To: wien at zeus.theochem.tuwien.ac.at Subject: [Wien] optical conductivity or electronic conductivity? Dear wien2k users, By calculating dielectric tensor we can calculate electronic conductivity. I have calculated dielectric tensor and from which I have also deduced electronic conductivity sigma by following the relation: Im.epsilon=sigma/omega where sigma=electronic conductivity and omega=angular frequency of the EM wave (energy*2pi/h) Now In file case.absorpup (or dn) we can find the data for optical conductivity in unit 1/(ohm.cm). But when I plot optical and electronic conductivity separately I have found they are exactly the same. Then my question is Q: whether we find optical or electronic conductivity in the file case.absorpup? P.S. optical and electronic conductivity are not the same thing!...glass is electronically insulating but optically conducting (transparent) material. _________________________________________________________________ Windows 7: I wanted more reliable, now it's more reliable. Wow! http://microsoft.com/windows/windows-7/default-ga.aspx?h=myidea?ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_myidea:102009 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://zeus.theochem.tuwien.ac.at/pipermail/wien/attachments/20091029/b9ff3dbb/attachment.htm>