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zhoudayan2木蟲 (小有名氣)
sherry
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[求助]
能帶計(jì)算過(guò)程
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第一次算能帶,過(guò)程如下,歡迎指正!首先對(duì)體系構(gòu)型優(yōu)化,INCAR如下: SYSTEM = default # Selfconsistent calculation is firstly performed. Start parameter for this Run: ISTART = 0 ICHARG = 2 INIWAV = 1 Electronic Relaxation: ENCUT = 400 ENAUG = 650 PREC = Accurate IALGO = 38 NELM = 600 NELMIN = 8 # surface = 8, bulk = 4 # NELMDL = -12 # When IALGO = 38, 0 EDIFF = 1E-04 # If high accuracy is required, set 1E-06. # NBANDS = 7 GGA = PE # VOSKOWN = 1 LREAL = Auto WEIMIN = 0 Ionic Relaxation: EDIFFG = -0.03 NSW = 1000 IBRION = 3 ISIF = 2 POTIM = 0.1 # IOPT = 2 # ISYM = 0 DOS related values: SIGMA = 0.05 ISMEAR = 0 Spin polarized: ISPIN = 2 MAGMOM =13*4 File writing LWAVE = .FALSE. LCHARG = .FALSE. Calculation of frequency: # POTIM = 0.02 # NFREE = 2 NPAR=1 優(yōu)化好后,將CONTCAR copy 成POSCAR進(jìn)行靜態(tài)計(jì)算,INCAR如下: SYSTEM = default # Selfconsistent calculation is firstly performed. Start parameter for this Run: ISTART = 0 ICHARG = 2 INIWAV = 1 Electronic Relaxation: ENCUT = 400 ENAUG = 650 PREC = Accurate IALGO = 38 NELM = 600 NELMIN = 8 # surface = 8, bulk = 4 # NELMDL = -12 # When IALGO = 38, 0 EDIFF = 1E-07 # If high accuracy is required, set 1E-06. # NBANDS = 7 GGA = PE # VOSKOWN = 1 LREAL = Auto WEIMIN = 0 Ionic Relaxation: # EDIFFG = -0.03 NSW = 1 IBRION = -1 # ISIF = 2 # POTIM = 0.1 # IOPT = 2 # ISYM = 0 DOS related values: SIGMA = 0.05 ISMEAR = 0 Spin polarized: ISPIN = 2 MAGMOM =13*4 File writing LWAVE = .FALSE. LCHARG = .TRUE. Calculation of frequency: # POTIM = 0.02 # NFREE = 2 NPAR=1 得到的CHG,與CHGCAR 在copy到算能帶中,同時(shí)靜態(tài)計(jì)算中的4個(gè)輸入文件,INCAR 如下: SYSTEM = default # Selfconsistent calculation is firstly performed. Start parameter for this Run: ISTART = 1 ICHARG = 11 INIWAV = 1 Electronic Relaxation: ENCUT = 400 ENAUG = 650 PREC = Accurate IALGO = 38 NELM = 600 NELMIN = 8 # surface = 8, bulk = 4 # NELMDL = -12 # When IALGO = 38, 0 EDIFF = 1E-07 # If high accuracy is required, set 1E-06. NBANDS = 100 GGA = PE # VOSKOWN = 1 LREAL = Auto WEIMIN = 0 Ionic Relaxation: # EDIFFG = -0.03 NSW = 1 IBRION = -1 # ISIF = 2 # POTIM = 0.1 # IOPT = 2 # ISYM = 0 DOS related values: SIGMA = 0.05 ISMEAR = 0 Spin polarized: ISPIN = 2 MAGMOM =13*4 File writing LWAVE = .FALSE. LCHARG = .TRUE. Calculation of frequency: # POTIM = 0.02 # NFREE = 2 NPAR=1 LORBIT=11, 這樣算對(duì)嗎,步驟我是按照侯老師手冊(cè)上的。 這三步,的KPOINTS 都沒變,是: K-Points 0 Gamma 1 1 1 0 0 0. 歡迎指正,然后怎么畫能帶圖?HOMO-LUMO gap 這些從哪個(gè)文件得到? |

木蟲 (小有名氣)
sherry

鐵桿木蟲 (著名寫手)

鐵桿木蟲 (著名寫手)

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