[CP2K-user] SCF not convergence with DIAGONALIZATION

jiaj... at gmail.com jiaj... at gmail.com
Mon Mar 25 03:09:04 UTC 2019


*Hi CP2K users,*

*I have been trying to do geo_opt calculation for NiO surface, but SCF has 
not converge. I use follow input :*

&GLOBAL
  PROJECT   Ni 
  RUN_TYPE GEO_OPT 
  PRINT_LEVEL MEDIUM
&END GLOBAL

&FORCE_EVAL
  METHOD QS

  &DFT
    BASIS_SET_FILE_NAME BASIS_MOLOPT
    POTENTIAL_FILE_NAME POTENTIAL 
    SURFACE_DIPOLE_CORRECTION T
    UKS T
    CHARGE 0 
    PLUS_U_METHOD Mulliken
    MULTIPLICITY 1

    &MGRID
      NGRIDS 4
      CUTOFF 700
      REL_CUTOFF 60
    &END MGRID

    &POISSON
      PERIODIC XYZ
    &END POISSON

    &SCF
      SCF_GUESS ATOMIC 
      EPS_SCF   1.0E-5
      MAX_SCF   200

      ADDED_MOS 300
      CHOLESKY  INVERSE
      &SMEAR ON
        METHOD FERMI_DIRAC
        ELECTRONIC_TEMPERATURE [K] 300
      &END SMEAR
      &DIAGONALIZATION
        ALGORITHM STANDARD
        EPS_ADAPT 0.01
      &END DIAGONALIZATION
      &MIXING
        METHOD BROYDEN_MIXING
        ALPHA 0.05
        NBROYDEN 8
      &END MIXING
      &OUTER_SCF
        EPS_SCF 1.0E-4
        MAX_SCF 1
      &END OUTER_SCF
    &END SCF

    &XC
      &XC_FUNCTIONAL 
        &PBE
          PARAMETRIZATION ORIG 
        &END PBE
      &END XC_FUNCTIONAL
      &VDW_POTENTIAL
        POTENTIAL_TYPE PAIR_POTENTIAL
         &PAIR_POTENTIAL
           TYPE DFTD3
           PARAMETER_FILE_NAME ./dftd3.dat
           REFERENCE_FUNCTIONAL PBE
           CALCULATE_C9_TERM T
         &END PAIR_POTENTIAL
      &END VDW_POTENTIAL
    &END XC

    &PRINT
      &PDOS
        NLUMO -1
         &LDOS
          LIST 1..200
         &END LDOS  
      &END
      &MO 
        EIGENVALUES TRUE
        EIGENVECTORS TRUE
        FILENAME MO
        &EACH
          QS_SCF 0
        &END EACH
      &END MO
      &PLUS_U on
       &EACH
        QS_SCF 1
       &END EACH
     &END PLUS_U
    &END PRINT
  &END DFT

  &SUBSYS
    &CELL
      ABC 14.7375 14.7375 36.2526
      ALPHA_BETA_GAMMA 90.0000 90.0000 90.0000
      PERIODIC XYZ
    &END CELL

    &KIND Ni1
      ELEMENT Ni 
      BASIS_SET DZVP-MOLOPT-SR-GTH
      POTENTIAL GTH-PBE
      &DFT_PLUS_U
        U_MINUS_J [eV] 1.0
        L 2
      &END DFT_PLUS_U
       &BS
        &ALPHA
          NEL  2  -2
          L    2   0
          N    3   4
        &END ALPHA
        &BETA
          NEL -2  -2
          L    2   0
          N    3   4
        &END BETA
      &END BS
    &END KIND                       
                                     
    &KIND Ni2                       
      ELEMENT Ni                     
      BASIS_SET DZVP-MOLOPT-SR-GTH   
      POTENTIAL GTH-PBE              
      &DFT_PLUS_U                    
        U_MINUS_J [eV] 1.0           
        L 2                          
      &END DFT_PLUS_U                
      &BS                                
        &ALPHA                           
          NEL -2  -2                     
          L    2   0                     
          N    3   4                     
        &END ALPHA                             
        &BETA                            
          NEL  2  -2                     
          L    2   0                     
          N    3   4                     
       &END BETA                              
      &END BS                           
    &END KIND                               
                                                
     &KIND O                                    
       ELEMENT O                                
       BASIS_SET DZVP-MOLOPT-SR-GTH             
       POTENTIAL GTH-PBE                        
       &BS                                      
         &ALPHA                                 
          N    2                                 
          L    1                                   
          NEL +2                                
         &END ALPHA                             
         &BETA                                  
          N    2                                   
          L    1                                   
          NEL +2                                
         &END BETA                              
      &END BS                                   
     &END KIND                                  
                                                
     &TOPOLOGY                                  
       COORD_FILE_FORMAT XYZ                    
       COORD_FILE_NAME  Ni_surface.xyz          
     &END TOPOLOGY                              
                                                
   &END SUBSYS                                  
 &END FORCE_EVAL                                
                                                
 &MOTION                                        
   &CONSTRAINT                                  
      &FIXED_ATOMS                              
        COMPONENTS_TO_FIX  XYZ                  
        LIST 1..15                              
        LIST 31..40                             
        LIST 51..62                             
        LIST 75..87                             
        LIST 101..115                           
        LIST 131..140                           
        LIST 151..163                           
        LIST 177..188                           
      &END FIXED_ATOMS                          
   &END CONSTRAINT
   &GEO_OPT                                              
    TYPE MINIMIZATION                                    
    MAX_ITER 500             
    OPTIMIZER LBFGS            
   &END GEO_OPT                 
 &END MOTION        

*Can you pleas help me?Thanks.*

*Best,*

*Jiajia*
       

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