Dear Siesta Users, i had try to perform a geometry optimization of some
atoms only, using geometry constrains in Siesta3
I havd try diferent set of parameters to do it, in the GeometryConstraints
section with position -1 to -68 and 1 to 68,  but always the geometry
optimization is perform to all the atoms.( The atoms i want to fix are from
1 to 68)
Can anyone help me with this, PLEASE!!!
This is the input file (*.fdf)
Thanks in Advance
Walter

Here is the file:

# General system descriptors
SystemName      fosfitos-optgeom-h18-3
SystemLabel     fosfitos-optgeom-h18-3
Number_of_species          4
NumberOfAtoms              86
NetCharge               +3
%block ChemicalSpeciesLabel
 1  26  Fe
 2   8  O
 3  15  P
 4   1  H
%endblock ChemicalSpeciesLabel

# Spin defintion
SpinPolarized           T
FixSpin                  T
TotalSpin               15.0
%block DM.InitSpin
  1      +5.0
  2      +5.0
  3     +5.0
%endblock DM.InitSpin

# Basis definition
PAO.BasisSize           DZP
PAO.EnergyShift         50.0 meV
%block PAO.Basis
Fe   5      2.25014
 n=3   0   1   E     0.64399     2.65247
     3.03150
     1.00000
 n=4   0   2   E    18.52214     3.13305
     4.15184     3.42190
     1.00000     1.00000
 n=3   1   1   E     8.12894     2.27894
     3.02759
     1.00000
 n=4   1   1   E    16.26911     2.00889
     4.26349
     1.00000
 n=3   2   2   E    14.23042     3.38062
     3.78964     2.62819
     1.00000     1.00000
%endblock PAO.Basis

# DFT, Grid, SCF
xc.functional         GGA
xc.authors             PBE
MeshCutoff              200.0 Ry # def 100 Ry
MaxSCFIterations        400
DM.MixingWeight         0.10 # def 0.250
DM.NumberPulay          8 # def 0
DM.Tolerance             0.1E-04 # def 0.1E-4

# Eigenvalue problem
SolutionMethod         diagon # diagon or OrderN
ElectronicTemperature   300 K    # Def 300 K, 1meV=11.6K

# Molecular dynamics and relaxations
MD.TypeOfRun         cg
MD.NumCGsteps        100 # geometry optimization

# Efficiency options
DirectPhi        T
SaveMemory        T

# Output options
WriteCoorInitial        F
WriteMullikenPop        2
WriteCoorXmol        T
WriteDenchar            F

# options for saving reading
DM.UseSaveDM          T  # T = restart if DM

# Lattices, coordinates
AtomicCoordinatesFormat
NotScaledCartesianAng

%block AtomicCoordinatesAndAtomicSpecies
  0.000300 3.078600 10.498600 1  -2.665700 7.696200 10.498600 1  2.666300
7.696200 10.498600 1  -0.000300 6.156700 7.555200 4  -2.666300 1.539100
7.555200 4  5.331700 6.156700 7.555200 4  0.000000 0.000000 9.860000 4
-5.332300 6.156700 7.555200 4  -2.666000 4.617700 9.860000 4  0.000000
9.235300 9.860000 4  -5.332000 9.235300 9.860000 4  -2.666300 10.774400
7.555200 4  2.666000 4.617700 9.860000 4  5.332000 9.235300 9.860000 4
2.665700 10.774400 7.555200 4  2.665700 1.539100 7.555200 4  -1.407100
3.890800 11.681600 2  0.000000 1.453600 11.681600 2  2.666000 0.064600
9.312800 2  3.943000 2.276500 9.312800 2  1.389000 2.276500 9.312800 2
-1.258900 -0.726800 11.681600 2  1.258900 -0.726800 11.681600 2  -3.924900
3.890800 11.681600 2  -2.666000 6.071300 11.681600 2  3.924900 3.890800
11.681600 2  2.666000 6.071300 11.681600 2  0.000000 4.682300 9.312800 2
-1.389000 2.276500 9.312800 2  1.277000 6.894100 9.312800 2  -1.277000
6.894100 9.312800 2  -2.666000 0.064600 9.312800 2  -3.943000 2.276500
9.312800 2  5.332000 4.682300 9.312800 2  6.609000 6.894100 9.312800 2
4.055000 6.894100 9.312800 2  -5.332000 4.682300 9.312800 2  -4.055000
6.894100 9.312800 2  -6.609000 6.894100 9.312800 2  -1.258900 8.508500
11.681600 2  -4.073100 8.508500 11.681600 2  -2.666000 9.299900 9.312800 2
1.258900 8.508500 11.681600 2  0.000000 10.688900 11.681600 2  -6.590900
8.508500 11.681600 2  -5.332000 10.688900 11.681600 2  -1.389000 11.511800
9.312800 2  -3.943000 11.511800 9.312800 2  4.073100 8.508500 11.681600 2
2.666000 9.299900 9.312800 2  6.590900 8.508500 11.681600 2  5.332000
10.688900 11.681600 2  3.943000 11.511800 9.312800 2  1.389000 11.511800
9.312800 2  1.407100 3.890800 11.681600 2  0.000000 0.000000 11.199700 3
-2.666000 4.617700 11.199700 3  -0.000300 6.156700 8.929500 3  -2.666300
1.539100 8.929500 3  2.666000 4.617700 11.199700 3  5.331700 6.156700
8.929500 3  -5.332300 6.156700 8.929500 3  0.000000 9.235300 11.199700 3
-5.332000 9.235300 11.199700 3  -2.666300 10.774400 8.929500 3  5.332000
9.235300 11.199700 3  2.665700 10.774400 8.929500 3  2.665700 1.539100
8.929500 3  -4.326171 2.184353 10.121928 4  -3.164426 -0.135204 8.590547 4
-1.436524 -0.616472 10.806227 4  1.180805 -0.622751 10.791053 4  2.591226
-0.026408 8.420541 4  4.296581 2.452158 8.504020 4  5.248833 4.347074
8.481712 4  7.452485 7.124382 9.099483 4  6.607276 8.672537 10.796827 4
5.386294 11.121510 10.894262 4  4.280096 11.467893 10.146130 4  1.383872
11.494575 10.212621 4  -1.129565 11.495814 10.174448 4  -5.462202 4.365031
10.144898 4  -6.694968 6.633470 10.169936 4  -7.455458 8.312509 11.526273 4
-5.679234 11.371473 12.154381 4  -3.916203 11.509169 10.212397 4 %endblock
AtomicCoordinatesAndAtomicSpecies

%block GeometryConstraints
position 1 to 68
%endblock GeometryConstraints



-- 
Walter Alberto Cañón Mancisidor
Químico, Licenciado en Química
Candidato a Doctor en Química
Laboratorio de Magnetismo Molecular
Facultad de Ciencias Químicas y Farmacéutica
Universidad de Chile
Tel: 56 (2) 978-2987
[email protected]

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