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[交流]
【求助】單斜結(jié)構(gòu)的對稱性
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我計算一個單斜結(jié)構(gòu),原胞28個原子,symmetry operation應(yīng)該是4個,現(xiàn)在總是2個,不知怎么回事,請高手們指教。 下面是輸入卡: &control calculation='vc-relax', restart_mode='from_scratch', pseudo_dir='/home/abin/work/pwscf/pseudo', outdir='/home/abin/work/pwscf/tmp/1', prefix='Mg2NiH4', tprnfor = .true. tstress = .true / &system ibrav = 13, celldm(1) = 27.104339854187, celldm(2) = 0.446475632713, celldm(3) = 0.451997490065, celldm(4) = -0.399069158980, nat=28, ntyp=3, ecutwfc = 66.0, / &electrons diagonalization='cg' conv_thr = 1.0e-8 mixing_beta = 0.7 / &IONS / &CELL cell_dynamics = 'bfgs' , press = 0.00 , / ATOMIC_SPECIES Mg 24.305 Mg.pz-bhs.UPF Ni 58.6934 Ni.pz-nd-rrkjus.UPF H 1.0079 H.pz-van_ak.UPF ATOMIC_POSITIONS {crystal} Mg 0.217514 0.252066 0.924578 Mg 0.014433 0.985567 0.750000 Mg 0.513031 0.486969 0.750000 Mg 0.252066 0.217514 0.424578 Mg 0.747934 0.782486 0.575422 Mg 0.782486 0.747934 0.075422 Mg 0.486969 0.513031 0.250000 Mg 0.985567 0.014433 0.250000 Ni 0.111351 0.649729 0.916788 Ni 0.350271 0.888649 0.583212 Ni 0.888649 0.350271 0.083212 Ni 0.649729 0.111351 0.416788 H 0.125635 0.135589 0.581523 H 0.088212 0.489160 0.696272 H 0.547670 0.180306 0.618877 H 0.489160 0.088212 0.196272 H 0.135589 0.125635 0.081523 H 0.276308 0.702670 0.946278 H 0.819694 0.452330 0.881123 H 0.702670 0.276308 0.446278 H 0.297330 0.723692 0.553722 H 0.180306 0.547670 0.118877 H 0.723692 0.297330 0.053722 H 0.864411 0.874365 0.918477 H 0.510840 0.911788 0.803728 H 0.874365 0.864411 0.418477 H 0.911788 0.510840 0.303728 H 0.452330 0.819694 0.381123 K_POINTS {automatic} 4 4 4 0 0 0 |
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