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ENCUT  = 300
PREC   = Normal
ALGO   = VeryFast
NELMIN = 4
NELM   = 150
EDIFF  = 1E-4
ISMEAR = 0
SIGMA  = 0.1
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# LCHARG = .FALSE.

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TEBEG  = 774
TEEND  = 300
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LPLANE = .TRUE.
LREAL  = AUTO
ICHARG = 1

ENCUT  = 300
PREC   = Normal
ALGO   = VeryFast
NELMIN = 4
NELM   = 150
EDIFF  = 1E-4
ISMEAR = 0
# SIGMA  = 0.1
# ISPIN  = 2

LWAVE  = .FALSE.
LCHARG = .FALSE.

IBRION = 0
NSW    = 3000
POTIM  = 1
SMASS  = 2
TEBEG  = 300
TEEND  = 300
NBLOCK = 1
KBLOCK = 50
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6Â¥: Originally posted by ÀîÌì°ï at 2015-04-12 21:20:15
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ÊÖ²áÖÐ˵¡°For SMASS>=0 a canonical ensemble is simulated using the algorithm of Nos¨¦. The Nos¨¦ mass controls the frequency of the temperature oscillations during the simulation (see [1, 2, 3]. For SMASS=0 Nos¨¦-mass corresponding to period of 40 time steps will be chosen. The Nos¨¦-mass should be set so that the induced temperature fluctuation show approximately the same frequencies as the typical 'phonon'-frequencies for the specific system. For liquids something like 'phonon'-frequencies might be obtained from the spectrum of the velocity auto-correlation function. If the ionic-frequencies differ by an order of magnitude from the frequencies of the induce temperature fluctuations Nos¨¦ thermostat and ionic movement might decouple leading to a non canonical ensemble. The frequency of the approximate temperature fluctuations induced by the Nos¨¦-thermostat can be found on the OUTCAR file.¡±Ò²¾ÍÊÇ˵¡°SMASS´óÓÚµÈÓÚ0ʱ£¬±íʾÊÇÓÃÓÃNoseËã·¨À´Ä£ÄâNVTϵ×Û¡£Nose mass¿ØÖÆÁËÄ£Äâ¹ý³ÌÖеÄζÈÕë·ÄµÄƵÂÊ¡£SMASS=0ʱ£¬Ä¬Èϲ½³¤40 time step£¬ÐèÉèÖÃNose massʹµÃζÈÕðµ´ÆµÂÊÓëÌåϵÉù×ÓÆµÂÊÒ»Ö¡£¶ÔÓÚÒºÌ壬¿ÉÒÔ´ÓËÙ¶È×ÔÐÞÕýº¯ÊýÖеõ½ÀàËÆÉù×ӵįµÂÊ¡£Àë×ӵįµÂÊÓëÉù×ÓÆµÂʲîÒ»¸öÊýÁ¿¼¶»áµ¼ÖÂϵ×Û²»ÔÙÊÇÕýÔòϵ×Û¡£Î¶ÈÕ𵴵ĽüËÆÆµÂÊ¿ÉÒÔ´ÓOUTCARÖеõ½¡£¡±µ«ÊÇÀïÃæÈÔȻûÓÐÇø·ÖSMASS=0,1,2,3µÄÇé¿ö¡£»¹ÓÐÒ»¸öÎÊÌâ¾ÍÊÇOUTCARÀïÃæÃ»ÕÒµ½ÊÖ²áÀï˵µÄζÈÕðµ´µÄÆµÂÊ£¬Âé·³¸æÖªÒ»ÏºÃÂð£¿Ð»Ð»~
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vasp001

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7Â¥: Originally posted by happyzyf at 2015-04-13 09:17:56
ÊÖ²áÖÐ˵¡°For SMASS>=0 a canonical ensemble is simulated using the algorithm of Nos¨¦. The Nos¨¦ mass controls the frequency of the temperature oscillations during the simulation (see . For SMASS ...

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7Â¥: Originally posted by happyzyf at 2015-04-13 09:17:56
ÊÖ²áÖÐ˵¡°For SMASS>=0 a canonical ensemble is simulated using the algorithm of Nos¨¦. The Nos¨¦ mass controls the frequency of the temperature oscillations during the simulation (see . For SMASS ...

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