<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px"><div id="yui_3_16_0_1_1430819014424_10573">Dear WIEN2k developers and users,</div><div id="yui_3_16_0_1_1430819014424_10611">Hi!</div><div id="yui_3_16_0_1_1430819014424_10652" dir="ltr">I know that the procedure in WIEN2k-FAQ: Charged cells is to introduce a background charge so that the system is neutral again.As NE in case.in2 is increased by "delta" , this "delta" should be used in case.inm. My concern is about "delta" .Can I take "delta" to be a fraction number?I am concerning about doping a fraction of electron in the supercell by adding 0.1,0.2,0.3 ....etc or removing -0.1,-0.2,-0.3....etc instead of adding or removing an integer number of electrons.I need to make sure that the procedure is also valid for doping a fraction of electrons in the supercell or not.Thanks a lot in advance.</div><div id="yui_3_16_0_1_1430819014424_11054" dir="ltr">With best regards</div><div id="yui_3_16_0_1_1430819014424_11037" dir="ltr">Mohammed<br></div><div style="" class="" id="yui_3_16_0_1_1430819014424_10600"><br style="" class=""></div></div></body></html>