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quantumespresso:フェルミ面

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quantumespresso:フェルミ面 [2018/02/25 22:50]
koudai [固有エネルギーの計算]
quantumespresso:フェルミ面 [2018/02/25 23:03]
koudai [固有エネルギーの計算]
Line 20: Line 20:
    ntyp = 1    ntyp = 1
    ecutwfc = 12.0    ecutwfc = 12.0
-   occupations = 'tetrahedra_opt'+   occupations = 'smearing' 
 +   smearing = 'mv' 
 +   degauss = 0.03
 / /
 &electrons &electrons
Line 29: Line 31:
  Al  0.0  0.0  0.0  Al  0.0  0.0  0.0
 K_POINTS automatic K_POINTS automatic
- 8 8 8 0 0 0+ 6 6 6 1 1 1
 </file> </file>
  
   $ pw.x < Al.scf.in > Al.scf.out   $ pw.x < Al.scf.in > Al.scf.out
- 
  
 ====== 固有エネルギーの計算 ====== ====== 固有エネルギーの計算 ======
Line 44: Line 45:
 (略) (略)
 calculation = 'nscf' calculation = 'nscf'
 +(略)
 +occupations = 'tetrahedra_opt'
 (略) (略)
 K_POINTS automatic K_POINTS automatic
Line 50: Line 53:
  
   $ pw.x < Al.fs.in > Al.fs.out   $ pw.x < Al.fs.in > Al.fs.out
 +  
 +SCF計算の段階でk点数が十分取れるなら、SCF計算もoccupations = 'tetrahedra_opt'を使うと良い(k点数に対するFermi energyの収束を必ず確認)。
  
  
quantumespresso/フェルミ面.txt · Last modified: 2021/07/12 23:39 by koudai