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INCAR£º
SYSTEM = PKT
ENCUT=500
PREC=Accurate
ISMEAR =0
SIGMA=0.05
EDIFF=1E-6
ISTART=0
ICHARG=2
IBRION=2
LCALCEPS=.TRUE.

KPOINTS:
Monkhorst Pack
0
Monkhorst Pack
2 2 1
0 0 0

POSCAR£º
data_PKT                                
   1.00000000000000     
     3.9300000000000002    0.0000000000000000    0.0000000000000000
     0.0000000000000000    3.9300000000000002    0.0000000000000000
     0.0000000000000000    0.0000000000000000    7.9299999999999997
   Pb   Ti   K    Ta   O
     1     1     1     1     6
Selective dynamics
Direct
  0.0000000000000000  0.0000000000000000  0.0365263276214520   F   F   T
  0.5000000000000000  0.5000000000000000  0.2624523516524320   F   F   T
  0.0000000000000000  0.0000000000000000  0.4962184331355944   F   F   T
  0.5000000000000000  0.5000000000000000  0.7536897875049664   F   F   T
  0.5000000000000000  0.0000000000000000  0.2345480460876364   F   F   T
  0.0000000000000000  0.5000000000000000  0.2345480460876364   F   F   T
  0.5000000000000000  0.5000000000000000 -0.0041182693364607   F   F   T
  0.5000000000000000  0.0000000000000000  0.7458680596303440   F   F   T
  0.0000000000000000  0.5000000000000000  0.7458680596303440   F   F   T
  0.5000000000000000  0.5000000000000000  0.4943991579860550   F   F   T

POTCARÊÇPb Ti K Ta O µÄPAWØÍÊÆ _svµÄ£¬°´Ë³Ðòµþ¼ÓµÃµ½µÄÎļþ

ÏÂÃæÊÇÎÒËã³öµÄ½á¹û£¬ÓÃgrep 'moment' OUTCAR ÌáÈ¡µÄ½á¹û£º

Ionic dipole moment: p[ion]=(     0.00000     0.00000   -48.72645 ) electrons Angst
Total electronic dipole moment: p[elc]=(     0.00000     0.00000     4.23883 ) electrons Angst
Ionic dipole moment: p[ion]=(     0.00000     0.00000   -48.72645 ) electrons Angst
Total electronic dipole moment: p[elc]=(     0.03863     0.00000     4.23885 ) electrons Angst
Total change in dipole moment: dp[elc]=(     0.03863     0.00000     0.00002 ) electrons Angst

Ionic dipole moment: p[ion]=(     0.00000     0.00000   -48.72645 ) electrons Angst
Total electronic dipole moment: p[elc]=(     0.00000     0.00000     4.23882 ) electrons Angst
Total change in dipole moment: dp[elc]=(     0.03863     0.00000     0.00002 ) electrons Angst

Ionic dipole moment: p[ion]=(     0.00000     0.00000   -48.72645 ) electrons Angst
Total electronic dipole moment: p[elc]=(     0.00000     0.03863     4.23886 ) electrons Angst
Total change in dipole moment: dp[elc]=(     0.00000     0.03863     0.00003 ) electrons Angst

Ionic dipole moment: p[ion]=(     0.00000     0.00000   -48.72645 ) electrons Angst
Total electronic dipole moment: p[elc]=(     0.00000     0.00000     4.23883 ) electrons Angst
Total change in dipole moment: dp[elc]=(     0.00000     0.03863     0.00003 ) electrons Angst

Ionic dipole moment: p[ion]=(     0.00000     0.00000   -48.72645 ) electrons Angst
Total electronic dipole moment: p[elc]=(     0.00000     0.00000     4.27186 ) electrons Angst
Total change in dipole moment: dp[elc]=(     0.00000     0.00000     0.03303 ) electrons Angst
ÇëÎÊ£¬ÒÔÉÏÖÐÄǸöTotal change in dipole momentµÄÊý¾ÝÔõôÓã¬Ç°Á½ÏîÎÒÖªµÀÊÇÀë×Ӻ͵ç×ӵĿ¼«¾Ø£¬µ«ÊÇTotal change in dipole momentµÄÊý¾ÝÊÇ×ö²î»¹ÊÇ×öºÍµÃÀ´µÄ£¬Ð¡µÜû̫¿´¶®¡£Ö®Ç°ÔÚINCARÖÐÉèÖùýLCALPOL ²ÎÊý£¬µÃµ½µÄ½á¹û²»ÏñÕâ¸öÕâô¶à£¬Ö»ÓÐÀë×Ӻ͵ç×ӵĿ¼«¾ØÁ½Ï¼òµ¥×ö²îµÃµ½uijË㼫»¯Ç¿¶È£¬Õâ¸öÒªÔõôËãÄØ£¬ÎÒ¿´ÊÖ²áÉÏ»¹ÓÐÒ»¸öLEPSILON£¬ÎÒÏë¶¼ÊÔÊÔ£¬¾ÍÊDz»ÖªµÀÈýÕßË㼫»¯ÓÐÊ²Ã´Çø±ð£¬½á¹ûÔõô´¦Àí£¬Ð¡µÜÏÈÔÚ´Ëл¹ýÁË£¡
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