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Qianwenxin02

新虫 (初入文坛)

[求助] VASP

C-C偶联的中间体优化不出来,断键了,该怎末解决呢,下面是incar文件包
  SYSTEM = H2
# Startparameter for this run:
  PREC   =    Accurate   
  ISPIN  =      2
  #MAGMOM =  2.0 2.0 2.0 2.0 4*0.0
  ENCUT  =    400   

# Electronic Relaxation
  EDIFF  =  1E-04    # 7.14 # stopping-criterion for ELM
# LREAL  =  Auto     # 7.34 # real-space projection : .FALSE. for systems < 20 atoms
  IALGO  =     48    # 7.38 # algorithm : use 48 for large systems, 8 otherwise
  ISTART = 0
  ICHARG = 2
  #NELMIN  =  5    # 7.13 # require at least 5 electronic iterations per ionic step
  LREAL = .FALSE.
  #RWIGS  = 1.746 1.323 0.900   
  #NPAR=1

# Ionic relaxation
  EDIFFG =   -1E-02 # 7.16 # convergence criterion for ions; positive = max energy change
  NSW    =    500    # 7.17 # number of steps for IOM
  IBRION =     2    # 7.19 # ionic relax: 0-MD 1-quasi-New 2-CG
  ISIF   =     2    # 7.21 # stress and relaxation: 2=const.Cell;3=Vol&Cell-relax;4=const.Vol&Cell.adjust
  ISMEAR =     1
  SIGMA  =    0.2

#LSDA_U
  #LDAU = .TRUE.
  #LDAUTYPE = 2
  #LDAUL = -1 2
  #LDAUU = 0.0 2.5
  #LDAUJ = 0.0 0.5
  #LDAUPRINT = 2

#HSE06
  #LHFCALC = .TRUE.  
  #HFSCREEN = 0.207
  #ALGO = Dumped
   #TIME = 0.2
  #PRECFOCK= N
   #AEXX = 0.25
   #NELM = 250
  #ENCUTFOCK = 0
  #NKRED = 2

#f-electron
  #LMAXMIX = 4

#DOS
  #NEDOS = 3000
  #EMIN = -30.0
  #EMAX = 30.0
  #NBANDS = 150

  #NSIM = 4
  #NPAR = 2
  #LPLAN = .TRUE.
  #LSCALU = .FALSE.  

  NWRITE = 0                                                                                          
  LORBIT = 11
   
  LWAVE = .FALSE.
  LCHARG = .FALSE.   

  NPAR=4
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新虫 (小有名气)

试试把目前优化的CONTCAR保存成POSCAR接着优化。

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