VASP进行结构优化，为啥 POSCAR 也变了？

wmg166

在超算平台上用VASP进行结构优化，为啥 POSCAR 也变了？  ， 好像变得不像晶体了   ，有的原子跑到对面 slab 里面去了。上图 POCAR  ， 下图 CONTCAR。    这是 INCAR

Global Parameters
ISTART =  1            (Read existing wavefunction; if there)
ISPIN  =  1            (Non-Spin polarised DFT)
# ICHARG =  11         (Non-self-consistent: GGA/LDA band structures)
LREAL  = .FALSE.       (Projection operators: automatic)
ENCUT  =  550        (Cut-off energy for plane wave basis set, in eV)
PREC   =  Normal       (Precision level)
LWAVE  = .TRUE.        (Write WAVECAR or not)
LCHARG = .FALSE.       (Write CHGCAR or not)
ADDGRID= .FALSE.       (Increase grid; helps GGA convergence)
# LVTOT  = .TRUE.      (Write total electrostatic potential into LOCPOT or not)
# LVHAR  = .TRUE.      (Write ionic + Hartree electrostatic potential into LOCPOT or not)
# NELECT =             (No. of electrons: charged cells; be careful)
# LPLANE = .TRUE.      (Real space distribution; supercells)
# NPAR   = 4           (Max is no. nodes; don't set for hybrids)
# Nwrite = 2           (Medium-level output)
# KPAR   = 2           (Divides k-grid into separate groups)
# NGX    = 500         (FFT grid mesh density for nice charge/potential plots)
# NGY    = 500         (FFT grid mesh density for nice charge/potential plots)
# NGZ    = 500         (FFT grid mesh density for nice charge/potential plots)

Electronic Relaxation
ISMEAR =  0            (Gaussian smearing; metals:1)
SIGMA  =  0.05         (Smearing value in eV; metals:0.2)
NELM   =  90           (Max electronic SCF steps)
NELMIN =  6            (Min electronic SCF steps)
EDIFF  =  1E-05        (SCF energy convergence; in eV)
# GGA  =  PS           (PBEsol exchange-correlation)

Ionic Relaxation
NSW    =  200          (Max ionic steps)
IBRION =  2            (Algorithm: 0-MD; 1-Quasi-New; 2-CG)
ISIF   =  2            (Stress/relaxation: 2-Ions, 3-Shape/Ions/V, 4-Shape/Ions)
EDIFFG = -2E-02        (Ionic convergence; eV/AA)
# ISYM =  2            (Symmetry: 0=none; 2=GGA; 3=hybrids)

jiangning198511

从新提交以上试试，应该是误操作了