Search found 5 matches

by anveeksh
Wed Mar 19, 2014 8:51 pm
Forum: Response calculations
Topic: PAW for dielectric constant?
Replies: 3
Views: 4037

Re: PAW for dielectric constant?

Hello,

I am using abinit version 7.0.3 and I still faced the same problem to calculate dielectric. It says GGA not implemented. How to overcome this error? Is using LDA the only option?

Thanks
Anveeksh
by anveeksh
Wed Nov 20, 2013 6:00 pm
Forum: Ground state
Topic: Zero Band Gap for semiconductor
Replies: 5
Views: 5497

Re: Zero Band Gap for semiconductor

In vain in the sense, I could not see any band gap when I plotted using AbinitBandStructureMaker.py. Ok. I will try with different psuedo potential files. I just noticed that when I am trying to plot the BS of the dataset that calculated density of states (iscf = -3) using the AbinitBandStructureMak...
by anveeksh
Wed Nov 20, 2013 9:39 am
Forum: Ground state
Topic: Zero Band Gap for semiconductor
Replies: 5
Views: 5497

Re: Zero Band Gap for semiconductor

Hi ilukacevic, Yes, my structure is relaxed. I performed an optcell 2 calculation to get a relaxed structure. I then took those parameters and gave them as input in my first dataset (SCF). And second dataset is Non-SCF to calculate the band structure. I tried PAW (generated by abinit) and Norm-conse...
by anveeksh
Fri Nov 15, 2013 7:25 am
Forum: Ground state
Topic: input file for band structure of MgB2
Replies: 7
Views: 5448

Re: input file for band structure of MgB2

Bamgbose,

What Psp files did you use? Are they Norm conserving Troullier Martin Pseudo potentials?

Thanks
by anveeksh
Sat Nov 09, 2013 9:43 pm
Forum: Ground state
Topic: Zero Band Gap for semiconductor
Replies: 5
Views: 5497

Zero Band Gap for semiconductor

Hello all, I got a 0eV band gap for Co3O4 which is a semiconductor. The literature has 1.96 eV using DFT. Whatever underestimation DFT does, it should show some kind of band gap for semiconducting oxides. Is my path for calculation of band structure wrong or is there any wrong with my input? Please ...