[Wien] case.inkram

[karima Physique]

Thank you very much for all these details

Le sam. 16 janv. 2021 à 19:24, Gavin Abo <gsabo at crimson.ua.edu> a écrit :

> On slide 19 of
>
>
> http://susi.theochem.tuwien.ac.at/events/ws2017/notes/Laskowski_optic-xas.pdf
>
> it has "broadening for Drude terms choose gamma for each case".
>
> The above statement may be advising to do an extensive literature survey
> for the specific structure under calculation.
>
> Slide 20 has 0.1 for a metal and 0.05 for semiconductor.
>
> When fitting a curve to experimental data such as in Origin [
> https://my.originlab.com/forum/topic.asp?TOPIC_ID=10648 ], starting
> guess values may be needed in the Values column in the fit window:
>
> https://www.originlab.com/doc/Tutorials/Fitting-NLFit-Basic
>
> Perhaps, those slide 20 values are typically a good starting guess value.
>
> You might see if you can find the value in a table on online. For example:
>
> See table under "Application to materials" in:
>
>
> https://www.horiba.com/fileadmin/uploads/Scientific/Downloads/OpticalSchool_CN/TN/ellipsometer/Drude_Dispersion_Model.pdf
>
> See Table 4 in article titled "Conductive nitrides: Growth principles,
> optical and electronic properties, and their perspectives in photonics
> and plasmonics":
>
> https://doi.org/10.1016/j.mser.2017.11.001
>
> See Table 1 and others in article titled "Fitting the optical constants
> of gold, silver, chromium, titanium, and aluminum in the visible
> bandwidth":
>
> https://doi.org/10.1117/1.JNP.8.083097
>
> On 1/15/2021 6:26 PM, karima Physique wrote:
> > Dear WIEN2k users,
> > for intraband contribution, where can I  find the value of Gamma for
> > Drude term
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