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倔強(qiáng)的小蚊蟲銅蟲 (正式寫手)
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[求助]
如何用VASP計(jì)算單個(gè)He原子的能量? 已有4人參與
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本人系初學(xué)者,希望得到前輩的指點(diǎn)。經(jīng)過(guò)了無(wú)數(shù)次的嘗試,都沒(méi)有得到合適的值,想一想還是關(guān)鍵詞設(shè)置的問(wèn)題,F(xiàn)在把輸入文件內(nèi)容貼如下: INCAR: SYSTEM = He LWAVE=.FALSE. LCHARG =.FALSE. ISTART = 0 ICHARG = 2 IALGO = 48 LPLANE = .TRUE. NPAR = 16 LSCALU = .FALSE. NSIM = 4 PREC = ACCURATE NELMDL=5 #ISPIN = 1 LREAL = Auto ISMEAR = 0 SIGMA = 0.02 ENCUT = 650 POSCAR: He 1.0 10 0.0000000000 0.0000000000 0 10 0.0000000000 0 0 10 He 1 Direct 0.000000000 0.000000000 0.000000000 KPOINTS: AUTO GRID 0 M 21 21 21 0 0 0 POTCAR(貼了部分進(jìn)去): PAW_PBE He 05Jan2001 2.00000000000000000 parameters from PSCTR are: VRHFIN =He: 1s LEXCH = PE EATOM = 78.7251 eV, 5.7861 Ry TITEL = PAW_PBE He 05Jan2001 LULTRA = F use ultrasoft PP ? IUNSCR = 0 unscreen: 0-lin 1-nonlin 2-no RPACOR = .000 partial core radius POMASS = 4.000; ZVAL = 2.000 mass and valenz RCORE = 1.100 outmost cutoff radius RWIGS = 1.200; RWIGS = .635 wigner-seitz radius (au A) ENMAX = 478.896; ENMIN = 359.172 eV RCLOC = .703 cutoff for local pot LCOR = T correct aug charges LPAW = T paw PP EAUG = 1180.948 RMAX = 2.107 core radius for proj-oper RAUG = 1.200 factor for augmentation sphere RDEP = 1.110 radius for radial grids QCUT = -5.933; QGAM = 11.866 optimization parameters …………………………………………………… 以及一個(gè)腳本文件VASP.PBS。 |

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For single atom, gamma point is enough! For the box, you can use 7*8*9 to break the symmetry. For more detail information, you can refer to the manual of vasp. https://www.vasp.at/vasp-workshop/slides/handsonI.pdf Be carefull: Do not learn some bad habits when you start to learn how to do calculations! |



金蟲 (著名寫手)
金蟲 (著名寫手)
銅蟲 (正式寫手)

銅蟲 (正式寫手)

木蟲 (小有名氣)

金蟲 (著名寫手)
金蟲 (著名寫手)
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