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ada_ada_2002鐵蟲 (小有名氣)
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[求助]
請問如何知道feff的計算有沒有收斂?
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最近在用FEFF9.0計算density of state. 發(fā)現(xiàn)在某一個能量氛圍內(nèi)DOS出現(xiàn)了一個很大的負峰,不知是什么問題,是因為計算沒有收斂嗎? 如果FEFF計算沒有收斂會不會報錯?怎么知道是否收斂? 還有一些相關(guān)的問題: Fermi level要如何確定? FEFF計算DOS是publishable的嗎?為什么文章很少? 計算結(jié)果: Fermi level (eV): -4.843 # Charge transfer : 0.361 ------這個值是做什么用的? # Electron counts for each orbital momentum: # 0 1.995 -------這些值是做什么用的? # 1 2.281 # 2 10.363 # 3 0.000 .... Preparing plane wave scattering amplitudes... Searching for paths... WARNING: rmax > distance to most distant atom. Some paths may be missing. rmax, ratx 1.00000E-01 0.00000E+00 Rmax 0.1000 keep and heap limits 0.0000000 0.0000000 Preparing neighbor table Internal path finder limit exceeded -- path list may be incomplete. Paths found 0 (maxheap, maxscatt 1 0) Eliminating path degeneracies... Plane wave chi amplitude filter 2.50% Unique paths 0, total paths 0 Done with module 4: pathfinder. Calculating EXAFS parameters... doing ip = 1 Curved wave chi amplitude ratio 4.00% Discard feff.dat for paths with cw ratio < 2.67% path cw ratio deg nleg reff 0 paths kept, 0 examined. Done with module 5: F_eff. Calculating chi... Use all paths with cw amplitude ratio 4.00% S02 1.000 Global sig2 0.00000 efermi: 479.030999999985 edge: -0.1779771 omega(1): 478.493121188014 emxs(1): -0.715855911986287 Done with module 6: DW + final sum over paths. 非常感謝!! |
找到一些相關(guān)的精華帖子,希望有用哦~
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