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邪美公子88木蟲 (初入文壇)
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[求助]
審稿意見---- 有關(guān) spin state 的問題
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我收到編輯給的審稿意見,其中一條是: The oxygen molecule is in triplet state. Is it accurate to use its energy in the expression of the energy of formation of surface vacancies? Is there a risk for inaccurate spin state in the expression? Did the authors use the energy of the triplet oxygen or the energy of the activate singlet oxygen? 我做的是 CeO2, 我計(jì)算的O2 vasp INCAR 是: SYSTEM = O2 ALGO = Fast ENCUT = 400 ISTART = 0 ; IBRION = 2 ICHARG = 2 ISIF = 2 EDIFF = 1E-5; EDIFFG = -0.001 ISMEAR = 0 ISPIN = 2 ; MAGMOM = 2*0.6 LORBIT = 11 LREAL = .False. LWAVE = .False. NELM = 200 NSW = 60 SIGMA = 0.1 GGA = PE 計(jì)算結(jié)果是: 13 F= -.98588692E+01 E0= -.98588692E+01 d E =-.127335E+01 mag= 2.0000 curvature: -0.06 expect dE=-0.741E-08 dE for cont linesearch -0.401E-08 ZBRENT: bisectioning opt : 0.3226 next Energy= -9.858869 (dE=-0.127E+01) bond charge predicted N E dE d eps ncg rms rms(c) DAV: 1 -0.985886960696E+01 -0.11236E-05 -0.88896E-08 56 0.232E-03 0.115E-04 RMM: 2 -0.985886999766E+01 -0.39070E-06 0.00000E+00 20 0.451E-04 14 F= -.98588700E+01 E0= -.98588700E+01 d E =-.127335E+01 mag= 2.0000 curvature: -0.04 expect dE=-0.346E-08 dE for cont linesearch -0.971E-09 trial: gam= 0.00000 g(F)= 0.804E-07 g(S)= 0.000E+00 ort =-0.368E-03 (trialstep = 0.865E+00) search vector abs. value= 0.805E-07 reached required accuracy - stopping structural energy minimisation 請問下,(1)我加的ISPIN=2 是計(jì)算的三線氧? 我去掉ISPIN以后,計(jì)算的結(jié)果比上面的能量大1eV左右,而這個加上ISPIN的能量是最低的,且有磁性,我個人認(rèn)為是最低能量狀態(tài)。 (2)我整個計(jì)算是 spin-polarized,但是編輯問我有沒有考慮 spin state ? 這個我如何回答?我自己找了些文獻(xiàn)再看,但是還是不清楚這個問題如何回答. 麻煩大家了!。。。。。。。! |
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