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fangyongxinxi

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[ÇóÖú] ÇóÖú£ºvasp ¼ÆËãÇâÔ­×ÓÄÜÁ¿ÊÇ-1.16ev ¶ø²»ÊÇ -13.6ev£¬why ?

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SYSTEM = H atom in a box
ISMEAR = 0
SIGMA = 0.01
ENCUT = 350.0
ISPIN = 2
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franch(½ð±Ò+1): лл»ØÌû½»Á÷ 2011-05-23 15:39:46
fangyongxinxi(½ð±Ò+5): 2011-05-24 15:05:21
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2Â¥2011-05-23 15:13:55
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sunyang1988

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ºØÒÇ(½ð±Ò+1): лл²ÎÓ룡 2011-05-23 21:02:35
fangyongxinxi(½ð±Ò+5): 2011-05-24 15:05:27
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3Â¥2011-05-23 19:42:38
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×ÓÐéÎÚÓÐ5388

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4Â¥2011-05-23 21:35:30
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stractor

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youzhizhe(½ð±Ò+1): ллÌáʾ¡£ 2011-05-24 17:19:09
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5Â¥2011-05-23 23:01:49
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fangyongxinxi

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ÒýÓûØÌû:
Originally posted by ºØÒÇ at 2011-05-23 15:13:55:
¼ÆËãÈí¼þµÃ³öÀ´µÄÄÜÁ¿¾ø¶ÔֵûÓÐÓà ֻÓÐÏà¶ÔµÄÓÐÓÃ

ÄÇvaspÖоø¶ÔÄÜÁ¿µÄ¶¨ÒåÊÇɶ £¿
6Â¥2011-05-24 09:29:41
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fangyongxinxi

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ÒýÓûØÌû:
Originally posted by sunyang1988 at 2011-05-23 19:42:38:
Äã˵µÄ-13.6eVÊǵç×Ó¹ìµÀÄÜÁ¿£¬¶ø¼ÆËãÖµÊÇÌåϵ×ÜÄÜÁ¿

ÇâÔ­×ÓµÄ×ÜÌåÄÜÁ¿²»¾ÍÊǵç×ӵĹìµÀÄÜÁ¿Â𠣿£¨Îªµç´ÅÏ໥×÷ÓÃÊÆÄÜ£¬ÌṩÁËÇâÔ­×ӵĹìµÀÄÜÁ¿£©
7Â¥2011-05-24 09:31:33
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fangyongxinxi

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ÒýÓûØÌû:
Originally posted by ×ÓÐéÎÚÓÐ5388 at 2011-05-23 21:35:30:
-13.6eV²»ÊǵçÀëÄÜô£¿

µçÀëÄܲ»¾ÍÊÇÕâ¸öÌåϵȫ²¿µÄÄÜÁ¿Â𠣿
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8Â¥2011-05-24 09:32:20
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fangyongxinxi

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ÒýÓûØÌû:
Originally posted by fangyongxinxi at 2011-05-23 13:23:40:
ÈçÌ⣬×Ô¼ºÓÃMS ¼ÆËãµÄ½á¹û¾ÍÊÇ-13ev×óÓÒ£¬µ«vasp¼ÆËãµÄ½á¹ûÊÇÊÇ -1.16ev£¬²»ÖªµÀvasp¶ÔÄÜÁ¿µÄ¶¨ÒåÊÇÉñÂí¡£Çó½â¡£
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Incar Ó¦¸ÃûʲôÎÊÌâ¡£

SYSTEM = H  ...

ÕâÊÇVASP×÷Õ߸ø³öµÄ½â´ð,ËùÒÔËãÊÇȨÍþÁË.Ô­ÎÄÈçÏÂ:

  The energy zero
  ..
  in VASP all energies are referred to the the reference state for which
  the potential was generated!
  this is in most cases not the real groundstate of the atom


which mean the energy you get is not the groundstate energy of the atom.
9Â¥2011-05-24 09:42:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fangyongxinxi

гæ (ÕýʽдÊÖ)

Free energy of the ion-electron system (eV)
  ---------------------------------------------------
  alpha Z        PSCENC =         0.00483373
  Ewald energy   TEWEN  =        -2.52514803
  -1/2 Hartree   DENC   =        -5.83854027
  -exchange  EXHF       =         0.00000000
  -V(xc)+E(xc)   XCENC  =         2.32847741
  PAW double counting   =         0.72944933       -0.73940351
  entropy T*S    EENTRO =         0.00000000
  eigenvalues    EBANDS =        -7.54396240
  atomic energy  EATOM  =        12.46813497
  ---------------------------------------------------
  free energy    TOTEN  =        -1.11615877 eV

  energy without entropy =       -1.11615877  energy(sigma->0) =       -1.11615877


--------------------------------------------------------------------------------------------------------

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