[QE-users] relax calculations of antiferromagnetic slab

Diship Srivastava dishipsrivastava at gmail.com
Sat Nov 21 13:06:00 CET 2020


Hi,
I am doing a relax type calculation on a (010) slab of FeOOH. In
literature it was mentioned that it is an antiferromagnetic with local
magnetic moments on Fe ions alternating along cell b axis & with
moments aligned parallel to cell c axis (PHYSICAL REVIEW B 79, 165101
 2009 ) .  ALso it is a charge transfer insulator with band gap 2.5
ev.
What changes do I make to my input file to get these features correctly?
Thanks in advance.
_______________________________________________
&CONTROL
  calculation = 'relax'
  etot_conv_thr =   1.4000000000d-03
  forc_conv_thr =   1.0000000000d-04
  outdir = './out/'
  prefix = 'goethite'
  pseudo_dir = './pseudo/'
  tprnfor = .true.
  tstress = .true.
  verbosity = 'high'
!  restart_mode = 'restart'

/
&SYSTEM
  degauss =   2.2049585400d-02
  ecutrho =   1.0800000000d+03
  ecutwfc =   9.0000000000d+01
  ibrav = 0
  nat = 140
  nspin = 2
  ntyp = 3
  occupations = 'smearing'
  smearing = 'cold'
  starting_magnetization(1) =   3.1250000000d-01
  starting_magnetization(2) =   1.0000000000d-01
  starting_magnetization(3) =   1.0000000000d-01
/
&ELECTRONS
  conv_thr =   2.8000000000d-08
  electron_maxstep = 80
  mixing_beta =   4.0000000000d-01
/
ATOMIC_SPECIES
Fe     55.847 Fe.pbe-spn-kjpaw_psl.0.2.1.UPF
H      1.00794 H.pbe-rrkjus_psl.1.0.0.UPF
O      15.9994 O.pbe-n-kjpaw_psl.0.1.UPF
ATOMIC_POSITIONS crystal
Fe           0.2499999756       0.2143239887       0.3553489986
Fe           0.2499999756       0.4415967069       0.3553489986
Fe           0.5833333127       0.2143239887       0.3553489986
Fe           0.5833333127       0.4415967069       0.3553489986
Fe           0.9166666499       0.2143239887       0.3553489986
Fe           0.9166666499       0.4415967069       0.3553489986
Fe           0.2499999756       0.1265851132       0.8553490524
Fe           0.2499999756       0.3538578314       0.8553490524
Fe           0.5833333127       0.1265851132       0.8553490524
Fe           0.5833333127       0.3538578314       0.8553490524
Fe           0.9166666499       0.1265851132       0.8553490524
Fe           0.9166666499       0.3538578314       0.8553490524
Fe           0.0833333616       0.0129487296       0.6446510094
Fe           0.0833333616       0.2402214478       0.6446510094
Fe           0.4166666987       0.0129487296       0.6446510094
Fe           0.4166666987       0.2402214478       0.6446510094
Fe           0.7500000358       0.0129487296       0.6446510094
Fe           0.7500000358       0.2402214478       0.6446510094
Fe           0.0833333616       0.1006876051       0.1446509557
Fe           0.0833333616       0.3279603233       0.1446509557
Fe           0.4166666987       0.1006876051       0.1446509557
Fe           0.4166666987       0.3279603233       0.1446509557
Fe           0.7500000358       0.1006876051       0.1446509557
Fe           0.7500000358       0.3279603233       0.1446509557
H            0.0833333616       0.0900496641       0.4090589851
H            0.0833333616       0.3173223824       0.4090589851
H            0.4166666987       0.0900496641       0.4090589851
H            0.4166666987       0.3173223824       0.4090589851
H            0.7500000358       0.0900496641       0.4090589851
H            0.7500000358       0.3173223824       0.4090589851
H            0.0833333616       0.0235867195       0.9090589394
H            0.0833333616       0.2508594377       0.9090589394
H            0.4166666987       0.0235867195       0.9090589394
H            0.4166666987       0.2508594377       0.9090589394
H            0.7500000358       0.0235867195       0.9090589394
H            0.7500000358       0.2508594377       0.9090589394
H            0.2499999756       0.1372231031       0.5909410230
H            0.2499999756       0.3644958213       0.5909410230
H            0.5833333127       0.1372231031       0.5909410230
H            0.5833333127       0.3644958213       0.5909410230
H            0.9166666499       0.1372231031       0.5909410230
H            0.9166666499       0.3644958213       0.5909410230
H            0.2499999756       0.2036859987       0.0909409692
H            0.2499999756       0.4309587660       0.0909409692
H            0.5833333127       0.2036859987       0.0909409692
H            0.5833333127       0.4309587660       0.0909409692
H            0.9166666499       0.2036859987       0.0909409692
H            0.9166666499       0.4309587660       0.0909409692
O            0.0833333616       0.1568801062       0.3042889987
O            0.0833333616       0.3841528245       0.3042889987
O            0.4166666987       0.1568801062       0.3042889987
O            0.4166666987       0.3841528245       0.3042889987
O            0.7500000358       0.1568801062       0.3042889987
O            0.7500000358       0.3841528245       0.3042889987
O            0.0833333616       0.1840289467       0.8042889530
O            0.0833333616       0.4113016649       0.8042889530
O            0.4166666987       0.1840289467       0.8042889530
O            0.4166666987       0.4113016649       0.8042889530
O            0.7500000358       0.1840289467       0.8042889530
O            0.7500000358       0.4113016649       0.8042889530
O            0.2499999756       0.0703926120       0.6957110094
O            0.2499999756       0.2976653303       0.6957110094
O            0.5833333127       0.0703926120       0.6957110094
O            0.5833333127       0.2976653303       0.6957110094
O            0.9166666499       0.0703926120       0.6957110094
O            0.9166666499       0.2976653303       0.6957110094
O            0.2499999756       0.0432437716       0.1957109557
O            0.2499999756       0.2705164898       0.1957109557
O            0.5833333127       0.0432437716       0.1957109557
O            0.5833333127       0.2705164898       0.1957109557
O            0.9166666499       0.0432437716       0.1957109557
O            0.9166666499       0.2705164898       0.1957109557
O            0.0833333616       0.0439278476       0.4432959913
O            0.0833333616       0.2712005659       0.4432959913
O            0.4166666987       0.0439278476       0.4432959913
O            0.4166666987       0.2712005659       0.4432959913
O            0.7500000358       0.0439278476       0.4432959913
O            0.7500000358       0.2712005659       0.4432959913
O            0.0833333616       0.0697085360       0.9432959456
O            0.0833333616       0.2969812542       0.9432959456
O            0.4166666987       0.0697085360       0.9432959456
O            0.4166666987       0.2969812542       0.9432959456
O            0.7500000358       0.0697085360       0.9432959456
O            0.7500000358       0.2969812542       0.9432959456
O            0.2499999756       0.1833448706       0.5567040168
O            0.2499999756       0.4106176378       0.5567040168
O            0.5833333127       0.1833448706       0.5567040168
O            0.5833333127       0.4106176378       0.5567040168
O            0.9166666499       0.1833448706       0.5567040168
O            0.9166666499       0.4106176378       0.5567040168
O            0.2499999756       0.1575642312       0.0567039630
O            0.2499999756       0.3848369495       0.0567039630
O            0.5833333127       0.1575642312       0.0567039630
O            0.5833333127       0.3848369495       0.0567039630
O            0.9166666499       0.1575642312       0.0567039630
O            0.9166666499       0.3848369495       0.0567039630
O            1.0833333730       0.1568801062       0.3042889987
O            1.0833333730       0.2712005659       0.4432959913
O            1.0833333730       0.3841528245       0.3042889987
O            0.2499999756       0.1575642312       1.0567039711
O            0.2499999756       0.3848369495       1.0567039711
O            0.5833333127       0.1575642312       1.0567039711
O            0.5833333127       0.3848369495       1.0567039711
O            0.9166666499       0.1575642312       1.0567039711
O            1.0833333730       0.0697085360       0.9432959456
O            1.0833333730       0.1840289467       0.8042889530
O            0.9166666499       0.3848369495       1.0567039711
O            1.0833333730       0.4113016649       0.8042889530
O            1.0833333730       0.2969812542       0.9432959456
O           -0.0833333616       0.0703926120       0.6957110094
O           -0.0833333616       0.1833448706       0.5567040168
O           -0.0833333616       0.2976653303       0.6957110094
O           -0.0833333616       0.0432437716       0.1957109557
O           -0.0833333616       0.1575642312       0.0567039630
O            0.0833333616       0.0697085360      -0.0567040625
O           -0.0833333616       0.2705164898       0.1957109557
O           -0.0833333616       0.3848369495       0.0567039630
O            0.0833333616       0.2969812542      -0.0567040625
O            0.4166666987       0.0697085360      -0.0567040625
O            0.4166666987       0.2969812542      -0.0567040625
O            0.7500000358       0.0697085360      -0.0567040625
O            0.7500000358       0.2969812542      -0.0567040625
H            1.0833333730       0.3173223824       0.4090589851
H            0.2499999756       0.2036859987       1.0909409773
H            0.2499999756       0.4309587660       1.0909409773
H            0.5833333127       0.2036859987       1.0909409773
H            0.5833333127       0.4309587660       1.0909409773
H            0.9166666499       0.2036859987       1.0909409773
H            1.0833333730       0.0235867195       0.9090589394
H            0.9166666499       0.4309587660       1.0909409773
H            1.0833333730       0.2508594377       0.9090589394
H           -0.0833333616       0.1372231031       0.5909410230
H           -0.0833333616       0.2036859987       0.0909409692
H            0.0833333616       0.0235867195      -0.0909409692
H           -0.0833333616       0.4309587660       0.0909409692
H            0.0833333616       0.2508594377      -0.0909409692
H            0.4166666987       0.0235867195      -0.0909409692
H            0.4166666987       0.2508594377      -0.0909409692
H            0.7500000358       0.0235867195      -0.0909409692
H            0.7500000358       0.2508594377      -0.0909409692
K_POINTS automatic
3 2 3 0 0 0
CELL_PARAMETERS angstrom
      9.1683568954       0.0000000000       0.0000000000
      0.0000000000      20.4246292114       0.0000000000
      0.0000000000       0.0000000000      10.0555229187


-- 
Diship Srivastava
JRF
Department of Chemistry
IIT(ISM) - Dhanbad
India


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