<div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif;font-size:small;color:#000000"><div class="gmail_default"><div class="gmail_default">Hey everyone,</div><div class="gmail_default"><br></div><div class="gmail_default">I am trying to study the effect of pressure on the band structure of <u>'Si - simple hexagonal (Phase V)</u>', which is stable between 17 to 30 GPa (approx.)</div><div class="gmail_default"><br></div><div class="gmail_default">Here is a paper published in Nature (<a href="https://www.nature.com/articles/s41586-020-2150-y" target="_blank" style="font-family:Arial,Helvetica,sans-serif">https://www.nature.com/articles/s41586-020-2150-y</a>), which has a figure with the band structure of Hex-Si (image is attached). The image has the following path <u>" A - Gamma - M - U - L ".</u></div><div class="gmail_default"><br></div><div class="gmail_default"><a href="https://drive.google.com/file/d/1zaJSjv3RX3gy87NTuBV5AjkJysW7pdOZ/view?usp=sharing" target="_blank">IMAGE 1 IS HERE</a></div><div class="gmail_default"><br></div><div class="gmail_default"><div>When I looked for BZ1 and the path to take for a simple hexagonal structure, I came across this link (
<a href="https://en.wikipedia.org/wiki/Brillouin_zone">https://en.wikipedia.org/wiki/Brillouin_zone</a>). It mentions the path to be <u>"Gamma - M - K - Gamma - A - L - H - A|L - M|K - H"</u></div></div><div><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr" style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><br></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default">My questions:</span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)"><br></span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)">1. From what I understand, the path and symmetry points are dependent on the type of lattice, and highly affect the band structure. Is this statement right or wrong?</span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)"><br></span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)">2. Which k-points/ High symmetry points/ BZ1/ path should I use for my band structure calculation?</span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)"><br></span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)">3. Is it possible, by any chance the author of this Nature paper, might have used the wrong k-points? Or should I use what they have used?</span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)"><br></span></font></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><font face="trebuchet ms, sans-serif"><span class="gmail_default" style="color:rgb(0,0,0)">Thanks for the help.</span></font></div></div></div></div></div></div></div></div></div></div><div style="color:rgb(34,34,34);font-family:Arial,Helvetica,sans-serif"><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><br class="gmail-Apple-interchange-newline"></div></div></div></div></div></div></div></div></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font face="trebuchet ms, sans-serif"><br></font></div><div dir="ltr"><font face="trebuchet ms, sans-serif">Regards,</font><div><font face="trebuchet ms, sans-serif"><br></font></div><div><b><font face="trebuchet ms, sans-serif">Chaman Gupta</font></b><div><font face="trebuchet ms, sans-serif">Graduate Research Student, <i><a href="http://depts.washington.edu/nrglab/" target="_blank">Novosselov Research Group</a>, UW</i><br></font></div><div><font face="trebuchet ms, sans-serif">Graduate Research Student, <i><a href="https://depts.washington.edu/pzlab/wordpress/" target="_blank">Pauzauskie Research Group</a>, UW</i></font></div><div><font face="trebuchet ms, sans-serif">University of Washington Seattle, <i>M.S. in Mechanical Engineering</i></font></div><div><font face="trebuchet ms, sans-serif">IIT Kharagpur, <i>B.Tech in Metallurgical and Materials Engineering</i></font></div><div><font face="trebuchet ms, sans-serif"><b><a href="https://www.linkedin.com/in/professorchamangupta" target="_blank">Linked In</a> | <a href="mailto:chaman@uw.edu" target="_blank">Email</a> | </b></font><span style="font-family:"trebuchet ms",sans-serif"><b>P</b>: +1 (206) 383-3514</span></div></div></div></div></div></div></div></div></div></div></div></div>