<div dir="ltr"><span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">i have two urgent problems. </span><br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px">
<span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">One is that, when i make scf calculation of LAO/STO superlattice for different kmesh, they got different fermi levers as well as the total energy. </span><br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px">
<span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">below is some results. </span><br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px">
<span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">12*8*1 TOTEN = -348.979566 eV E-fermi : 4.7215 </span><br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px">
<span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">12*8*2 TOTEN = -348.98343746 eV E-fermi : 4.7500 </span><br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px">
<span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">12*8*4 TOTEN = -347.52711583 eV E-fermi : 7.3118 </span><br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px">
<span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">it's very strange they are so different, so i cannot belive in them. </span><br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px">
<br style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px"><span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">The other question is that, after scf calculation on 12*8*2, i make a dos calculation, and find that the fermi energy is shifted from </span><span style="font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;color:blue">4.7500 in scf to 7.4184 in dos</span><span style="color:rgb(0,0,0);font-family:verdana,tahoma,arial,helvetica,sans-serif;font-size:12px;background-color:rgb(227,225,225)">. i also ploted the density of state in scf and dos calculation, former states insulator and latter is a metal phase. so ridiculous. </span><br clear="all">
<div><br></div>-- <br>------------------------------------------------------------------------------------------------------------<div>Yue-Wen FANG, PhD candidate<br><div><a href="http://clpm.ecnu.edu.cn/" style="font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)" target="_blank">Key Laboratory of Polar Materials and Devices, Ministry of Education</a><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
<div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><a href="http://www.ecnu.edu.cn/english/" target="_blank">East China Normal University</a> </div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">
I will persist until I succeed!</div></div><div><br></div><div><br></div></div>
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