Re: [Wien] GHOST BANDS error

2023-07-13 Thread Natalia Andreeva
Thank you very much! On Thu, Jul 13, 2023 at 12:17 PM wrote: > Hi, > > As mentioned by Peter Blaha, this is not possible to do a calculation > with a hybrid functional using XC_HYB_LDA_*, XC_HYB_GGA_* or > XC_HYB_MGGA_* from Libxc. Actually, without entering into detail, this > is not possible t

Re: [Wien] GHOST BANDS error

2023-07-13 Thread fabien . tran
Hi, As mentioned by Peter Blaha, this is not possible to do a calculation with a hybrid functional using XC_HYB_LDA_*, XC_HYB_GGA_* or XC_HYB_MGGA_* from Libxc. Actually, without entering into detail, this is not possible to use Libxc at all for a hybrid calculation (the results would be wron

Re: [Wien] GHOST BANDS error

2023-07-08 Thread Natalia Andreeva
Thank you very much! With Best Regards, Natalia On Sat, Jul 8, 2023 at 2:39 PM Peter Blaha wrote: > As was mentioned before, you can't use the XC_HYB_GGA_XC_* switches. > > > In addition: The manual says for NBAND: use "at least" NE+1. Then it > should run through. > > But this does not mea

Re: [Wien] GHOST BANDS error

2023-07-08 Thread Peter Blaha
As was mentioned before, you can't use the XC_HYB_GGA_XC_* switches. In addition: The manual says for   NBAND:  use "at least" NE+1. Then it should run through. But this does not mean that such a calculation is good. You should use more bands for the second variation HF step, depending on yo

Re: [Wien] GHOST BANDS error

2023-07-08 Thread Natalia Andreeva
Dear Professor Blaha, I use wien21. I calculate the BaTiO3 structure, atom 1 is Ba, RMT(Ba) = 2.44; RMT(Ti) = 1.72; RMT(O) = 1.55. First I run the SCF calculation on WC, it converges successfully. Results of scf calculation for WC potential: Insulator, EF-inconsistency corrected :GAP (global) :

Re: [Wien] GHOST BANDS error

2023-07-07 Thread Peter Blaha
I need some more information: Are you using wien23 or an earlier version ? What is your system (struct file), in particular what is atom 1; its RMT, ... Such a large EF is rather unusual (except for 5f systems) and for sure the resulting E-parameters as you showed below must lead to ghostban

[Wien] GHOST BANDS error

2023-07-07 Thread Natalia Andreeva
Dear Professor Blaha, I tried to run calculations for hybrid functionality from libxc, but I get a GHOST BANDS error. The case.scf2 file states that for atom 1 with l=1, the energy parameters need to be changed. :WARN : QTL-B value eq. 32.08 in Band of energy 1.68736 ATOM= 1 L= 1 :WARN : You shou

[Wien] Ghost bands error in SrTiO3 calculation at high RKmax

2012-06-15 Thread Ye Zhu
Thanks again, Dr. Marks. I figured out that -in1ef means to let WIEN2k run by default settings after my reply. I am trying to simulate EELS O K-edge in SrTiO3 using TELNES3 bundled with WIEN2k. I might not need very high precision, but just to see how accurate the simulation can be. Just to check,

[Wien] Ghost bands error in SrTiO3 calculation at high RKmax

2012-06-14 Thread Laurence Marks
I use APW following the reasoning in the user guide - it converges for a smaller RKMAX and is variationally better. I am not an expert with TELNES, but my understanding is that things like how core holes are treated will dominate the accuracy, plus of course any chanelling of the high energy Bloch

[Wien] Ghost bands error in SrTiO3 calculation at high RKmax

2012-06-14 Thread Ye Zhu
Thanks, Dr. Marks. I will try -in1ef. The default case.in1 does use APW for all orbitals, and works for my calculation. But just from the manual only the valence d and f-orbitals are recommended to use APW (obsolete now?). The following is the default case.in1: WFFIL EF=.42168 (WFFIL, WFPRI, ENF

[Wien] Ghost bands error in SrTiO3 calculation at high RKmax

2012-06-14 Thread Ye Zhu
Hi all, I am running a calculation for SrTiO3 empty DOS using the newest version of WIEN2k. An error I got is Error in LAPW2 'l2main' - QTL-B.GT.15., Ghostbands, check scf files which occurred during the very first round when I used RKmax = 8. .scf2 file shows: Q

[Wien] Ghost bands error in SrTiO3 calculation at high RKmax

2012-06-14 Thread Laurence Marks
My email was not completely clear. I suggest that you just use the case.in1 that you sent without other options. I am not clear what you are trying to do, and if you explain more someone may be able to help. From the sounds of it you want the unoccupied DOS to be "more accurate". What is limiting

[Wien] Ghost bands error in SrTiO3 calculation at high RKmax

2012-06-13 Thread Laurence Marks
Your linearization energies look very strange. I suggest that you use the default case.in1 and APW (is there a reason you want to use LAPW?) For most problems that I know of -in1new is now obsolete, replaced by -in1ef (which is done automatically with the default case.in1). Then just increase RKMAX