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GW calculation

Posted: Mon Jun 28, 2010 1:42 pm
by Newlife1982
Dear All,

I have a problem with input variable 'kssform' and the error is as followings:

The present version of abinit does not accept pseudopotentials with more than one projector per angular momentum channel when nbandkss/=0 and kssform ==1,2.
Use kssform = 3 in your input file


For the pseudopotentials, I used the one with semi-core. If I change the kssform to 3, there is no .KSS file.

Please give me some suggestions.

Thank you in advance for your replying.

Wang

Re: GW calculation

Posted: Tue Jun 29, 2010 1:46 pm
by bruneval
Which element? which semicore? which pseudo?

Re: GW calculation

Posted: Tue Jun 29, 2010 5:06 pm
by Newlife1982
Thank you for your replying.
I calculate the band gap of the crystal TiO2 using LDA.
For Ti, I use Hartwigsen-Goedecker-Hutter pseudopotentials with zion = 12. While I use Teter "extended norm-conserving" pseudopotentials for Oxygen with zion = 6.

Wang

Re: GW calculation

Posted: Tue Jun 29, 2010 5:46 pm
by bruneval
In this type of pseudo, you have several projectors per angular momentum. This is not allowed so far in the GW implementation of abinit.
Try to use instead traditional troullier-martins pseudos.

Fabien

Re: GW calculation

Posted: Wed Jun 30, 2010 9:40 am
by Newlife1982
Fabien

Thank you very much!

Wang