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How to plot bandstructures along the symetries directions

Posted: Wed Dec 06, 2006 7:58 pm
by arlesv
I dont know if someone has the same problem like me, I am trying to figured out how to plot bandstructures along the symetries directions for an FCC material, i was looking in the manual and in the workshop cited in the Vasp forum

http://cms.mpi.univie.ac.at/vasp-workshop

which said exactly the same, they said which i need to create a file KPOINTS that looks like
kpoints for bandstructure L-G-X-U K-G
10
line
reciprocal
0.50000 0.50000 0.50000 1
0.00000 0.00000 0.00000 1

0.00000 0.00000 0.00000 1
0.00000 0.50000 0.50000 1

0.00000 0.50000 0.50000 1
0.25000 0.62500 0.62500 1

0.37500 0.7500 0.37500 1
0.00000 0.00000 0.00000 1

and run VASP after the electronic structure calcualtion in full brillouin zone for calculate the band strucuture along this directions. Nevertheles the moment i run the new KPOINT file for this calculation i got an error message who said that the
KPOINT file contain errors and then the calculation is stopped. I am really confused because in VASP-workshop handson examples (subdirectories 2_3_fccSi_band ) gave this example but the moment to run it it gave the same error. I would be really so kindness if someone could give some advice for calculate the bandstructure along symetries.

Thank....!!!

How to plot bandstructures along the symetries directions

Posted: Thu Dec 07, 2006 6:13 am
by admin
please note that this format of the KPOINTS file can only be processed in vasp-versions up from 4.6.19. Maybe you have an older release?
Please check
1) whether line is a valid input tag (grep line mkpoints.F)
2) the release of your vasp version from the header lines of OUTCAR

if line is read in mkpoints.F, you may have hidden characters in your KPOINTS file, please check this as well

How to plot bandstructures along the symetries directions

Posted: Thu Dec 07, 2006 7:06 am
by lahaye
I'm suspicious about the number 1 at the end of each coordinate line.
I think that should go. See also:
http://cms.mpi.univie.ac.at/vasp/vasp/node59.html

Rob.