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meatballjy新蟲 (初入文壇)
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[求助]
BoltzTraP 計(jì)算中費(fèi)米能級(jí)的問題 已有1人參與
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最近做一個(gè)研究材料熱性能的一個(gè)項(xiàng)目,用到了Boltztrap。在case.trace文件中可以找到我想用的數(shù)據(jù),其中,我以chemical potential做橫坐標(biāo),Seebeck為縱坐標(biāo)畫圖。但我發(fā)現(xiàn)無論我的case.intrans里的費(fèi)米能級(jí)是一個(gè)計(jì)算出來得值或者是0,整個(gè)圖像沒有任何一點(diǎn)變化。我原以為輸入確定的費(fèi)米能級(jí),那橫坐標(biāo)(化學(xué)勢(shì))的零點(diǎn)就正好是費(fèi)米能級(jí)(就跟其他情況下E-Ef為橫坐標(biāo)畫圖一樣)?墒乾F(xiàn)在的問題是我不知道畫出來的橫坐標(biāo)的零摻雜點(diǎn)應(yīng)該是在0,還是在計(jì)算出來得費(fèi)米能級(jí)的值上?比如費(fèi)米能級(jí)是2eV的話,在橫坐標(biāo)為2eV的那個(gè)點(diǎn)其化學(xué)摻雜為0,還是橫坐標(biāo)為0的點(diǎn)其摻雜為0? 我后來又試了一下他給的test,Bi2Te3,還是一樣的問題。所以我排除了是WIEN 還是 GENE 的關(guān)系。 下面是我的case.intrans文件,紅色標(biāo)注得是費(fèi)米能級(jí): GENE # use generic interface 0 0 0 0.0 # iskip (not presently used) idebug setgap shiftgap 0.36059 0.005 0.4 254.0 # Fermilevel (Ry), energygrid, energy span around Fermilevel, number of electrons CALC # CALC (calculate expansion coeff), NOCALC read from file 5 # lpfac, number of latt-points per k-point BOLTZ # run mode (only BOLTZ is supported) .30 # (efcut) energy range of chemical potential 1200. 100. # Tmax, temperature grid -1. # energyrange of bands given individual DOS output sig_xxx and dos_xxx (xxx is band number) HISTO GENE # use generic interface 0 0 0 0.0 # iskip (not presently used) idebug setgap shiftgap 0.00000 0.005 0.4 254.0 # Fermilevel (Ry), energygrid, energy span around Fermilevel, number of electrons CALC # CALC (calculate expansion coeff), NOCALC read from file 5 # lpfac, number of latt-points per k-point BOLTZ # run mode (only BOLTZ is supported) .30 # (efcut) energy range of chemical potential 1200. 100. # Tmax, temperature grid -1. # energyrange of bands given individual DOS output sig_xxx and dos_xxx (xxx is band number) HISTO |
銅蟲 (小有名氣)
木蟲 (初入文壇)
新蟲 (小有名氣)
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