Help!!!

Total energy, geometry optimization, DFT+U, spin....

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sunnyone
Posts: 26
Joined: Fri Mar 01, 2013 11:12 pm

Help!!!

Post by sunnyone » Mon May 13, 2013 3:20 pm

Dear Forume,

I am trying to calculate the elastic constant for a semiconductor compound, but i got this error
( The eigenvector number1 has zero norm. )
Plz one can show me why i got this and here is my input file:
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telast_6.in
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jzwanzig
Posts: 504
Joined: Mon Aug 17, 2009 9:25 am

Re: Help!!!

Post by jzwanzig » Mon May 13, 2013 6:04 pm

I would suggest that you not put the relaxation in as part of the loop. I find it usually easier especially with cells of changing size, to do the optimization first, copy the optimized cell and coordinates into a new input file, and then compute with that.

By the way, please don't title your posts "Help", almost everyone who posts a question here wants "help", please use a more specific title.
Josef W. Zwanziger
Professor, Department of Chemistry
Canada Research Chair in NMR Studies of Materials
Dalhousie University
Halifax, NS B3H 4J3 Canada
jzwanzig@gmail.com

sunnyone
Posts: 26
Joined: Fri Mar 01, 2013 11:12 pm

Re: Help!!!

Post by sunnyone » Tue May 14, 2013 2:08 pm

Dear jzwanzig,

Thank you very much for your help and am so sorry about the title i didn't know that bcoz am new here, actually i don't know how i can do that, can you please write for me an example or if you can just check my input and tell me where i do that.


Kind regards

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jzwanzig
Posts: 504
Joined: Mon Aug 17, 2009 9:25 am

Re: Help!!!

Post by jzwanzig » Tue May 14, 2013 2:22 pm

Please send me a direct e-mail to jzwanzig@gmail.com, we don't need to carry this back and forth on the forum.
Josef W. Zwanziger
Professor, Department of Chemistry
Canada Research Chair in NMR Studies of Materials
Dalhousie University
Halifax, NS B3H 4J3 Canada
jzwanzig@gmail.com

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