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liuqun

木虫 (小有名气)

[求助] VASP频率

想计算过渡态的频率,INCAR是这么写的

PREC= Accurate
ADDGRID = .TRUE.
ENCUT= 400.00 eV
ISTART=1
ICHARG=0
IBRION= 5
NFREE=2
NSW=1
POTIM=0.015 !displacement of atoms in Ang.
IALGO= 48
LREAL=Auto !needed for good convergence
NSIM = 4
LCHARG = .False.
LPLANE=.TRUE.
OUTCAR最后只有9个频率,我是18个原子,不是应该有54个频率吗?这是POSCAr   1.00000000000000     
     4.8057738239874404   -2.7746148109436000    0.0000000000000000
     0.0000000000000000    5.5492296218872097    0.0000000000000000
     0.0000000000000000    0.0000000000000000   21.7963886260986008
    16   2
Selective dynamics
Direct
  0.0000000000000000  0.0000000000000000  0.0000000000000000   F   F   F
  0.0000000000000000  0.0000000000000000  0.3218998611007395   F   F   T
  0.3333300054073336  0.1666699945926668  0.2141708986561220   F   F   F
  0.1666699945926667  0.3333300054073334  0.1077489108826792   F   F   F
  0.5000000000000001  0.0000000000000001  0.0000000000000000   F   F   F
  0.5000000000000001  0.0000000000000001  0.3219007189148242   F   F   T
  0.8333299756050110  0.1666699945926667  0.2141736774631222   F   F   F
  0.6666699647903443  0.3333300054073334  0.1077477961144756   F   F   F
  0.0000000000000000  0.5000000000000000  0.0000000000000000   F   F   F
  0.0000000000000000  0.5000000000000000  0.3218978275846960   F   F   F
  0.3333300054073336  0.6666699647903442  0.2141724902336900   F   F   F
  0.1666699945926667  0.8333299756050109  0.1077471286634544   F   F   F
  0.5000000000000001  0.5000000000000000  0.0000000000000000   F   F   F
  0.5000000000000001  0.5000000000000000  0.3219004501712994   F   F   F
  0.8333299756050110  0.6666699647903442  0.2141725058655004   F   F   T
  0.6666699647903443  0.8333299756050109  0.1077514541795995   F   F   F
  0.3252558162996958  0.2303089527827253  0.6014003436665313   T   T   T
  0.3514118094662007  0.2160100816851610  0.7240826784894224   T   T   T把大部分的原子固定住了,想知道为什么只有9个频率输出,我的INCAR写的对不对
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hakuna

木虫 (知名作家)

引用回帖:
5楼: Originally posted by liuqun at 2012-06-22 12:37:59
关键是我有5个原子是自由的,也该有15个振动平率啊,怎么会出来九个呢...

你所谓的5个自由原子,实际上只有两个是全自由的,另外3个是1/3自由的
6楼2012-06-22 17:41:07
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lbing9002

木虫 (正式写手)

你算的什么物质?
穷则独善其身,达则兼济天下。
2楼2012-06-21 11:58:16
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liuqun

木虫 (小有名气)

引用回帖:
2楼: Originally posted by lbing9002 at 2012-06-21 11:58:16
你算的什么物质?

PT吸附碘的
3楼2012-06-21 12:16:08
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hakuna

木虫 (知名作家)

【答案】应助回帖

感谢参与,应助指数 +1
你都把人家绑定了,还让人家振动
数数有多少个T,就会给你多少个振动频率
4楼2012-06-22 05:29:52
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