TD-DFT of metal cluster.

Queries about input and output files, running specific calculations, etc.


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dinesh_acharya1
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TD-DFT of metal cluster.

#1 Post by dinesh_acharya1 » Fri Jan 05, 2024 12:58 am

I want to execute a TD-DFT calculation on a metal cluster to calculate temperature dependent absorption and emission spectra, however I noticed that this calculation is prevalent in the literature for insulators and semiconductors. There is a command LOPTICS for this calculation, but it is not appropriate for metal (LOPTICS =.TRUE. # for insulators, omit for metals), therefore I set LSPECTRAl (LSPECTRAL =.TRUE. #enables the computation of the frequency-dependent dielectric function) with LPEAD =.FALSE. and ICHARG = 11. Is this INCAR tag sufficient for TD-DFT of metal cluster ?

svijay
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Re: TD-DFT of metal cluster.

#2 Post by svijay » Fri Jan 05, 2024 8:07 am

Dear dinesh_acharya1,

Please supply VASP input and output files in accordance with the forum guidelines here: https://www.vasp.at/forum/viewtopic.php?t=17928. Additionally, please make sure to supply a minimal working example in case of specific queries: https://www.vasp.at/wiki/index.php/Mini ... le_example; thank you!

Sudarshan

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