[Wien] Fwd: YS-PBE0 with -so

Dr. K. C. Bhamu kcbhamu85 at gmail.com
Tue Aug 6 20:27:10 CEST 2019


Dear Tran
I am performing YS-PBE0 on a scf (with -so) calculation with pbe-gga with
Wien2k_18.1.
I have few  queries.
A.
1. My original scf(-so) has done with 7 7 5 shifted mesh. To reduce the
computational cost I am using 3 3 2 mesh for YS-PBE0 (see appendix below
how I did it).
Can we do this and if so then should we call it redklist?

2.
Again with a limited HPC facilities, how safer would be for the doss, band,
optic calculations if we go with the 3 3 2 mesh?
Also I want to use the same scf calculations for thermoelectric
calculations without additional scf.

3. Could you please correct me if I am doing any mistake in the below steps?

I am curious to know in particular: in normal dft+so calculations we do a
additional step as "lapwso" in between lapw1 and lapw2 -so.
Is it okay here if we avoid both the steps i.e. lapw1 -so and lapwso for
YS-PBE0+SO?

Steps:
x_lapw lapw2 -qtl -hf -so -p
x_lapw tetra -hf -so

run_bandplothf_lapw -p -qtl -redklist
x_lapw spaghetti -hf -p -so

x_lapw optic -hf -p -so
x_lapw joint -hf -p -so
x_lapw kram -p -so

Appendix:

$run_kgenhf_lapw

If you type 0 you can give 3 integers for nx,ny,nz
0
How many in x?
3
How many in y?
3
How many in z?
2
Do you want to shift? (0=no, 1=shift)
0
  NUMBER OF K-POINTS IN WHOLE CELL: (0 allows to specify 3 divisions of G)
 length of reciprocal lattice vectors:   0.549   0.549   0.387   0.000
0.000   0.000
  Specify 3 mesh-divisions (n1,n2,n3):
  Shift of k-mesh allowed. Do you want to shift: (0=no, 1=shift)
           6  k-points generated, ndiv=           3           3           2
KGEN ENDS
0.007u 0.038s 0:00.05 60.0% 0+0k 0+240io 0pf+0w
           1  symmetry operations without inversion
  NUMBER OF K-POINTS IN WHOLE CELL: (0 allows to specify 3 divisions of G)
 length of reciprocal lattice vectors:   0.549   0.549   0.387   0.000
0.000   0.000
  Specify 3 mesh-divisions (n1,n2,n3):
  Shift of k-mesh allowed. Do you want to shift: (0=no, 1=shift)
          18  k-points generated, ndiv=           3           3           2
KGEN ENDS
0.001u 0.036s 0:00.04 75.0% 0+0k 0+56io 0pf+0w


regards
Bhamu
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