<div dir="ltr"><div><div><div><div><div><div><div><div><div>Dear All,<br></div>I am doing some test calculations on 2D Sn and comparing QE with SIESTA. Both QE and SIESTA almost give the same results (DOS, lattice constnat, charge,,). However, I have problem with the band structure. I want to plot the band structure in <br></div>0.0,0.0 0.0 to 0.33,0.330.00 to 0.5,0.0,0.0.<br></div>I either write a python code or jut do by hand to put the number of points in the input file for the band structure calculation.<br>_POINTS crystal<br>29<br>0.00000 0.00000 0.00000 1.0000<br>0.03000 0.03000 0.00000 1.0000<br>0.06000 0.06000 0.00000 1.0000<br>0.09000 0.09000 0.00000 1.0000<br>0.12000 0.12000 0.00000 1.0000<br>0.15000 0.15000 0.00000 1.0000<br>0.18000 0.18000 0.00000 1.0000<br>0.21000 0.21000 0.00000 1.0000<br>0.24000 0.24000 0.00000 1.0000<br>0.27000 0.27000 0.00000 1.0000<br>0.30000 0.30000 0.00000 1.0000<br>0.33000 0.33000 0.00000 1.0000<br>0.34000 0.31060 0.00000 1.0000<br>0.35000 0.29120 0.00000 1.0000<br>0.36000 0.27180 0.00000 1.0000<br>0.37000 0.25240 0.00000 1.0000<br>0.38000 0.23300 0.00000 1.0000<br>0.39000 0.21360 0.00000 1.0000<br>0.40000 0.19420 0.00000 1.0000<br>0.41000 0.17480 0.00000 1.0000<br>0.42000 0.15540 0.00000 1.0000<br>0.43000 0.13600 0.00000 1.0000<br>0.44000 0.11660 0.00000 1.0000<br>0.45000 0.09720 0.00000 1.0000<br>0.46000 0.07780 0.00000 1.0000<br>0.47000 0.05840 0.00000 1.0000<br>0.48000 0.03900 0.00000 1.0000<br>0.49000 0.01960 0.00000 1.0000<br>0.50000 0.00020 0.00000 1.0000<br></div><br></div>when I used it, I always see crossing points in the band structure. Pls, see the attached file and you can see crossing points not only around Dirac point, but also above that.<br></div>Could you plz let me know why I am facing this problem whenever I try the band structure of any material and I will have these crossing lines.<br><br></div>Is there any option in QE for calculating these points by just giving the high symmetry points in the input for band structure calculations.<br></div>Thanks,<br></div>Gul <br clear="all"><div><div><div><div><div><div><div><div><div><div><div><br>-- <br><div><div dir="ltr"><div> </div><p style="margin:0in 0in 0pt;line-height:normal"><span style="font-size:12pt"><font color="#0000bf">Dr. Gul Rahman<br>Assistant Professor,<br>Department of Physics,<br>Quaid-i-Azam University,<br>Islamabad, Pakistan</font></span></p><span style="font-size:12pt"><font color="#0000bf"><a href="http://www.qau.edu.pk/profile.php?id=818020" target="_blank">http://www.qau.edu.pk/profile.php?id=818020</a></font></span></div></div>
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