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identation金蟲(chóng) (著名寫(xiě)手)
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【求助】請(qǐng)教,為什么明明是鐵磁性體系,abinit的計(jì)算結(jié)果沒(méi)有磁矩
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輸入文件如下 occopt 1 nsppol 2 spinat 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 0.0 0.0 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 toldfe 1.0d-10 iscf 5 diemac 8.0 prtdos 2 acell 5.4858 5.4858 7.7518 Angstroms angdeg 90 90 90 spgroup 83 natrd 9 brvltt -1 ntypat 4 znucl natom 20 typat 1 2 2 3 3 4 4 4 4 xred 0.00000 0.50000 0.25000 0.00000 0.00000 0.00000 0.50000 0.50000 0.50000 0.50000 0.50000 0.00000 0.00000 0.00000 0.50000 0.00000 0.00000 0.25040 0.25700 0.24290 0.00000 0.24290 0.25700 0.50000 0.50000 0.50000 0.24960 nband 60 ecut 72 ecutsm 0.5 kptopt 1 ngkpt 6 6 4 nshiftk 1 shiftk 0.5 0.5 0.5 nstep 400 然而得到的結(jié)果 Total charge density [el/Bohr^3] , Maximum= 9.9364E-01 at reduced coord. 0.3125 0.8125 0.5250 , Minimum= 8.8712E-06 at reduced coord. 0.5000 0.0000 0.2500 Spin up density [el/Bohr^3] , Maximum= 5.2799E-01 at reduced coord. 0.4875 0.5625 0.9667 , Minimum= 4.4354E-06 at reduced coord. 0.5000 0.0000 0.2500 Spin down density [el/Bohr^3] , Maximum= 5.2799E-01 at reduced coord. 0.9375 0.9875 0.5333 , Minimum= 4.4358E-06 at reduced coord. 0.5000 0.0000 0.2500 Magnetization (spin up - spin down) [el/Bohr^3] , Maximum= 5.1055E-01 at reduced coord. 0.4875 0.5625 0.9667 , Minimum= -5.1055E-01 at reduced coord. 0.0625 0.0125 0.4667 Relative magnetization (=zeta, between -1 and 1) , Maximum= 9.3606E-01 at reduced coord. 0.4875 0.5625 0.9667 , Minimum= -9.3606E-01 at reduced coord. 0.0625 0.0125 0.4667 體系的DOS自旋上和自旋下的電子密度基本一樣 用的是FHI的GGA贗勢(shì),IXC=11 請(qǐng)問(wèn)這是為什么呢?很奇怪呀,之前用LDA贗勢(shì)abinit計(jì)算磁性把絕緣體計(jì)算成金屬 還想問(wèn)一下,ABINIT的PAW方法能否計(jì)算介電極化呢? 謝謝 |
榮譽(yù)版主 (著名寫(xiě)手)
金蟲(chóng) (著名寫(xiě)手)
至尊木蟲(chóng) (職業(yè)作家)
銅蟲(chóng) (小有名氣)
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