[Wien] WIEN2k: Charge leakage error for In2O3
Peter Blaha
peter.blaha at tuwien.ac.at
Tue Aug 12 22:29:38 CEST 2025
The error comes, because your symmetry is wrong.
How did you initialize the calculation ? Probably step by step (with the
outdated parameters for RKmax and k-points - why would you use 1000
k-points for such a big cell ??), but you must not neglect the
corresponding warnings/errors.
UNLESS YOU ARE AN EXPERT, NEVER use the "OLD" step-by-step initialitation.
Instead, use the default batch mode with your desired precision like
init_lapw -prec XX (and maybe -ecut -6.6 to include the In-p as
valence). XX should be small at the beginning (0 or 1) for the relaxation.
This will automatically change your struct file to include the proper
symmetry and set meaningful parameters for the calculation, which will
make them 10 or 100 times faster.
In addition: min_lapw ... is NOT the recommended minimization
anymore. Use run_lapw -min ...
---------------------------------------------------------------
Hello,
I am running wien version 24.1 on a cluster. The purpose of my
calculations is to get DOS/PDOS. I am running this In2O3.struct using
this input ( rkmax= 7, kpoint 1000, cutoff=-8) and these commands
:min_lapw -NI -p -j "run_lapw -NI -p -fc 2.0 -i 400 -ec 1 -cc 1" where
I used rmt for In 2.152 and for O 1.848, still got charge leakage issue:
:NEC01: NUCLEAR AND ELECTRONIC CHARGE 1903.00000000 1823.24509977
Plane Wave
:WARNING: NEC01: average large charge leakage: 1.0095556991715962
e/atom
:ERROR : NEC01: average charge leakage too large:
1.0095556991715962 e/atom
Check FERMI method (use TEMP(S) for 2D), check symmetry (rounding
errors in case.struct) I also tried this command but no
update: init_lapw -prec 2 -vxc 13 -ecut -8.0 -rkmax 7 -numk 5000
The charge leakage issue is coming around 1.004 to
1.1 e/atom ( that I found by changing rmt, cut off, rkmax etc). Can you
please give some guidance how to resolve this charge leakage issue? I am
sharing my structure and case.in1 file. Structure file:In2O3
P LATTICE,NONEQUIV.ATOMS: 79 1_P1
MODE OF CALC=RELA unit=bohr
19.127052 19.127052 19.127052 90.000000 90.000000 90.000000
ATOM -1: X=0.25000000 Y=0.25000000 Z=0.25000000
MULT= 1 ISPLIT= 8
In NPT= 781 R0=0.00001000 RMT= 2.1520 Z: 49.000
LOCAL ROT MATRIX: 1.0000000 0.0000000 0.0000000
0.0000000 1.0000000 0.0000000
0.0000000 0.0000000 1.0000000
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