如题,使用默认的网格点画出来的图比较粗糙,读了vasp手册,我觉得要在INCAR设置NGXF等参数增加网格密度,但是不清楚具体数字是设置为多少?
grep NGX OUTCAR得到,
dimension x,y,z NGX = 24 NGY = 24 NGZ = 32
dimension x,y,z NGXF= 48 NGYF= 48 NGZF= 64
support grid NGXF= 48 NGYF= 48 NGZF= 64
NGX,Y,Z is equivalent to a cutoff of 12.79, 12.79, 11.54 a.u.
NGXF,Y,Z is equivalent to a cutoff of 25.58, 25.58, 23.08 a.u.
dimension x,y,z NGX = 22 NGY = 22 NGZ = 32
我用NGXF=48 NGYF= 48 NGZF= 64之后,感觉画出来的图没多大区别啊。
还是说要取比它大的网格点?欢迎指教 |