<div dir="ltr">thanks for your reply.<div>just i want to know why GaN is semiconductor but in epsilon.out i found <span style="font-family:arial,sans-serif;font-size:13px">Fermi energy is 11.66 eV the system is a metal???</span></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-07-21 11:12 GMT+01:00 Layla Martin-Samos <span dir="ltr"><<a href="mailto:lmartinsamos@gmail.com" target="_blank">lmartinsamos@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">you will never have the correct experimental gap with epsilon. Epsilon implements Random Phase Approximation dielectric response with no-local fields effects (and of course no-excitonic effects). You need to go to state-of-art GW caluclations + Bethe-Salpeter. Or at least some hybrid functional. Read <br>
<h3>
Electronic excitations: density-functional versus many-body Green’s-function approaches </h3>
<h5>
Rev. Mod. Phys. <b>74</b>, 601
–
Published 7 June 2002
</h5>
<h6>
Giovanni Onida, Lucia Reining, and Angel Rubio
</h6><p><br></p><p>cheers</p><p><br></p><p>Layla<br></p></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-07-21 11:30 GMT+02:00 Halima Zaari <span dir="ltr"><<a href="mailto:halimazaari@gmail.com" target="_blank">halimazaari@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px">Hello all,</span><div><span style="font-family:arial,sans-serif;font-size:13px">I am trying to find the optical properties of GaN which has Eg=3.4 eV using the epsilon.x</span></div>
<div><font face="arial, sans-serif">i get the files containig the eloss fucntion and dielectric funtion but the file epsilon.out the epsilon file gives me the following information</font></div><div><font face="arial, sans-serif">Fermi energy is 11.66 eV the system is a metal</font></div>
<div><font face="arial, sans-serif">perfoming eps calculation </font></div><div><font face="arial, sans-serif">the bulk xx plasomn is 12.41</font></div><div><font face="arial, sans-serif">haw i can solve this problem.</font></div>
<div><font face="arial, sans-serif">thanks in advance</font></div><span><font color="#888888"><div><font face="arial, sans-serif"><br clear="all"></font><div><br></div>-- <br><div dir="ltr"><font style="color:rgb(136,136,136)" color="#ff0000" face="georgia, serif">H.ZAARI</font><div>
<font color="#888888" face="georgia, serif"><br></font><div><font color="#ff0000" face="comic sans ms, sans-serif"><i>PhD Student in laboratory of magnetism and physics of high energy (LMPHE)</i></font></div>
<div><font color="#ff0000" face="comic sans ms, sans-serif"><i>Faculty of Sciences in Rabat - Morocco</i></font></div>
<div><font color="#ff0000"><font face="comic sans ms, sans-serif"><i>Email:</i><i> <a href="mailto:halimazaari@gmail.com" target="_blank">halimazaari@gmail.com</a></i></font><font style="font-family:georgia,serif;text-decoration:underline"><br>
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<font color="#888888" face="georgia, serif"><br></font><div><font color="#ff0000" face="comic sans ms, sans-serif"><i>PhD Student in laboratory of magnetism and physics of high energy (LMPHE)</i></font></div>
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