Hello,

I have one understanding problem which I even didn't recognise for a long time. My system converges very fast with for higher Ecut or more k-points. I did a converges study via a loop from 1 k-point + 2 k-point each loop. after 5 k-points it coveraged, the total energy rises like this:

etotal1 -3.0999171036E+01

etotal2 -3.0909749251E+01

etotal3 -3.0905728251E+01

etotal4 -3.0905582987E+01

etotal5 -3.0905496096E+01

etotal6 -3.0905541922E+01

etotal7 -3.0905462868E+01

etotal8 -3.0905522243E+01

etotal9 -3.0905474050E+01

etotal10 -3.0905492651E+01

Why...isn`t it a bit strange ... how should one interpret this result?

thx for help

BR

maths