<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yiv5033916286"><div id="yui_3_16_0_1_1412501727861_16304"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yui_3_16_0_1_1412501727861_16303"><div id="yiv5033916286"><div id="yiv5033916286yui_3_16_0_1_1412501727861_14346"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yiv5033916286yui_3_16_0_1_1412501727861_14345"><div id="yiv5033916286"><div id="yiv5033916286yui_3_16_0_1_1412501727861_12360"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yiv5033916286yui_3_16_0_1_1412501727861_12359"><div id="yiv5033916286"><div id="yiv5033916286yui_3_16_0_1_1412501727861_6981"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;" id="yiv5033916286yui_3_16_0_1_1412501727861_6980"><div dir="ltr" id="yiv5033916286yui_3_16_0_1_1412501727861_3952">Dear wien2k users</div><div dir="ltr" id="yiv5033916286yui_3_16_0_1_1412501727861_3952"><br></div><div dir="ltr" id="yiv5033916286yui_3_16_0_1_1412501727861_3952">I'm calculating electronic band structure of some narrow band gap semiconductors, according to these calculations the top of the valance band locates a bit above the Fermi level , the top of the valance band crosses the fermi level, what does it mean? why in these compounds that they are semiconductors, the Fermi level is crossed by the valance band. </div><div dir="ltr" id="yiv5033916286yui_3_16_0_1_1412501727861_3952" class="yiv5033916286" style=""> Best wishes</div><div dir="ltr" id="yiv5033916286yui_3_16_0_1_1412501727861_3952" class="yiv5033916286" style="">Sahraii</div></div></div></div></div></div></div></div></div></div></div></div></div></div></body></html>