计算化学公社

 找回密码 Forget password
 注册 Register
Views: 324|回复 Reply: 0
打印 Print 上一主题 Last thread 下一主题 Next thread

[Quantum ESPRESSO] 求助,请问soc+U+磁性有什么冲突吗,计算mgfep的能带加了soc偏差特别大。

[复制链接 Copy URL]

1

帖子

0

威望

25

eV
积分
26

Level 2 能力者

跳转到指定楼层 Go to specific reply
楼主
请教一下各位老师,现在在复现一篇文献,计算的是mgfep,一开始没加soc算能带还能拟合的上
&SYSTEM
  ibrav= 0,
  nat= 6,
  ntyp= 3,
  occupations = 'smearing', smearing = 'mv', degauss = 0.028,
  ecutwfc = 120, ecutrho = 500,
  nspin = 2, starting_magnetization(1) = 1.0,
  lda_plus_u = .true.
  lda_plus_u_kind = 0
  U_projection_type = 'atomic'
  Hubbard_U(1) = 4.0
/
&ELECTRONS
  conv_thr = 1.0d-9
  mixing_beta = 0.4
/
&IONS
/
&CELL
  press_conv_thr=0.1
  cell_dofree = 'ibrav+2Dxy'
/
ATOMIC_SPECIES
  Fe 55.845 Fe.pbesol-spn-kjpaw_psl.1.0.0.UPF
  P 30.97376 P.pbesol-n-kjpaw_psl.1.0.0.UPF
  Mg 24.305 Mg.pbesol-spnl-kjpaw_psl.1.0.0.UPF
CELL_PARAMETERS (angstrom)
   3.680227883   0.000000000   0.000000000
   0.000000000   3.680227883   0.000000000
   0.000000000   0.000000000  24.000000000
ATOMIC_POSITIONS (crystal)
Mg            0.5000000000        0.0000000000        0.4088839393
P             0.0000000000        0.5000000000        0.4270477581
Fe            0.0000000000        0.0000000000        0.5000000000
Fe            0.5000000000        0.5000000000        0.5000000000
P             0.5000000000        0.0000000000        0.5729522419
Mg            0.0000000000        0.5000000000        0.5911160607
K_POINTS {automatic}
  12 12 2 0 0 0

这是没加soc的参数,加了soc之后不知道为啥能带偏差特别大,我个人感觉可能是+U+soc+磁性的原因,一开始没加soc的时候就不太好收敛
&SYSTEM
  ibrav= 0,
  nat= 6,
  ntyp= 3,
  occupations = 'smearing', smearing = 'mv', degauss = 0.028,
  ecutwfc = 150, ecutrho = 900,
  starting_magnetization(1) = 1.0,
  noncolin=.true., lspinorb=.true.
  lda_plus_u = .true.
  lda_plus_u_kind = 1
  U_projection_type = 'atomic'
  Hubbard_U(1) = 4
/
&ELECTRONS
  conv_thr = 1.0d-7
  mixing_beta = 0.1d0
  electron_maxstep = 300
/
&IONS
/
&CELL
  press_conv_thr=0.1
  cell_dofree = 'ibrav+2Dxy'
/
ATOMIC_SPECIES
  Fe 55.845 Fe.rel-pbesol-spn-kjpaw_psl.1.0.0.UPF
  P 30.97376 P.rel-pbesol-n-kjpaw_psl.1.0.0.UPF
  Mg 24.305 Mg.rel-pbesol-spnl-kjpaw_psl.1.0.0.UPF
CELL_PARAMETERS (angstrom)
   3.680227883   0.000000000   0.000000000
   0.000000000   3.680227883   0.000000000
   0.000000000   0.000000000  24.000000000
ATOMIC_POSITIONS (crystal)
Mg            0.5000000000        0.0000000000        0.4088839393
P             0.0000000000        0.5000000000        0.4270477581
Fe            0.0000000000        0.0000000000        0.5000000000
Fe            0.5000000000        0.5000000000        0.5000000000
P             0.5000000000        0.0000000000        0.5729522419
Mg            0.0000000000        0.5000000000        0.5911160607
K_POINTS {automatic}
  12 12 2 0 0 0

这是加soc之后的自洽文件,想请各位老师看看有什么问题吗?

手机版 Mobile version|北京科音自然科学研究中心 Beijing Kein Research Center for Natural Sciences|京公网安备 11010502035419号|计算化学公社 — 北京科音旗下高水平计算化学交流论坛 ( 京ICP备14038949号-1 )|网站地图

GMT+8, 2024-11-27 10:34 , Processed in 2.311732 second(s), 28 queries , Gzip On.

快速回复 返回顶部 返回列表 Return to list