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<p>I would start with turbo_eels.x code of TDDFT module that is
distributed with QE. Of course you have to cautious while dealing
with a 2D system (i.e. check convergence w.r.t to vacuum and etc)
but in principle you can obtain momentum-dependent dielectric
function.</p>
<p>Best regards</p>
<p>Oleksandr Motornyi<br>
</p>
<div class="moz-cite-prefix">On 18/09/2019 11:56, Zhou Jianqiang
wrote:<br>
</div>
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I doubt if you can obtain this from QE or not. The plot is
essentially the -Im\epsilon_Q{\omega}^{-1}. You can have a look
at the Yambo tutail for computing this object from QE DFT
calculations.</div>
<div style="font-family: Calibri, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0);">
<a href="http://www.yambo-code.org/index.php" id="LPlnk377770"
moz-do-not-send="true">http://www.yambo-code.org/index.php</a> </div>
<div
id="LPBorder_GTaHR0cDovL3d3dy55YW1iby1jb2RlLm9yZy9pbmRleC5waHA."
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style="padding: 12px 36px 12px 12px; width: 100%;
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margin-bottom: 12px;">
<a target="_blank" id="LPUrlAnchor300720"
href="http://www.yambo-code.org/index.php"
style="text-decoration: none; color:
var(--themePrimary);" moz-do-not-send="true">YAMBO
code - The Yambo project</a></div>
<div id="LPDescription300720" style="font-size: 14px;
max-height: 100px; color: rgb(102, 102, 102);
font-family: wf_segoe-ui_normal, "Segoe UI",
"Segoe WP", Tahoma, Arial, sans-serif;
margin-bottom: 12px; margin-right: 8px; overflow:
hidden;">
Yambo is a FORTRAN/C code for Many-Body calculations
in solid state and molecular physics. Yambo relies on
the Kohn-Sham wavefunctions generated by two DFT
public codes: abinit, and PWscf.The code was
originally developed in the Condensed Matter
Theoretical Group of the Physics Department at the
University of Rome "Tor Vergata" by Andrea Marini. ...</div>
<div id="LPMetadata300720" style="font-size: 14px;
font-weight: 400; color: rgb(166, 166, 166);
font-family: wf_segoe-ui_normal, "Segoe UI",
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<a class="moz-txt-link-abbreviated" href="http://www.yambo-code.org">www.yambo-code.org</a></div>
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style="line-height:18px"><i>--------------------------------------------------------------------------------------------------</i></span></font></div>
<div><span style="line-height:21px"><i><font size="2"><span
style="font-size:10pt">Jianqiang (Sky) ZHOU</span></font></i></span></div>
<span style="font-size:10pt"></span>
<div><span style="line-height:21px"><i><font size="2"><span
style="font-size:10pt">European Theoretical
Spectroscopy Facility</span><br>
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de Paris (INSP)</span><br>
</font></i><i><font size="2">
<h3 class="r"><span style="color:rgb(117,123,128);
font-size:10pt">Sorbonne Université - Case 840 - 4
place Jussieu</span><br>
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size="2">
<div><span style="font-size:10pt">Barre 2232, étage 2,
pièce 11</span><br>
<span style="font-size:10pt">75005 PARIS</span></div>
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moz-do-not-send="true">http://etsf.polytechnique.fr/People/Sky</a></font></i></div>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>发件人:</b>
users <a class="moz-txt-link-rfc2396E" href="mailto:users-bounces@lists.quantum-espresso.org"><users-bounces@lists.quantum-espresso.org></a> 代表
kazem zhour <a class="moz-txt-link-rfc2396E" href="mailto:kazem.zhour@hotmail.com"><kazem.zhour@hotmail.com></a><br>
<b>发送时间:</b> 2019年9月15日 6:16<br>
<b>收件人:</b> <a class="moz-txt-link-abbreviated" href="mailto:users@lists.quantum-espresso.org">users@lists.quantum-espresso.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:users@lists.quantum-espresso.org"><users@lists.quantum-espresso.org></a><br>
<b>主题:</b> [QE-users] Plasmons</font>
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<div dir="ltr">
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
I'm studying the plasmonic properties of graphene
decorated with some metals. I'm using epsilon.x in my
study, but I saw the attached graphs published in
reference "<span style="color:rgb(34,34,34);
font-family:Arial,sans-serif; font-size:13px;
text-align:left; background-color:rgb(255,255,255);
display:inline!important">Despoja, Vito, et al. </span><i
style="color:rgb(34,34,34);
font-family:Arial,sans-serif; font-size:13px;
text-align:left; background-color:rgb(255,255,255)">Physical
Review B</i><span style="color:rgb(34,34,34);
font-family:Arial,sans-serif; font-size:13px;
text-align:left; background-color:rgb(255,255,255);
display:inline!important"><span> </span>87.7 (2013):
075447.</span>" and we would like to reproduce such
outcomes for our research. Please tell me the steps needed
to be followed to reproduce such graphs.</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
Kazem Zhour</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
PhD student</div>
<div style="font-family:Calibri,Helvetica,sans-serif;
font-size:12pt; color:rgb(0,0,0)">
University of Santiago de compostela</div>
</div>
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</blockquote>
<pre class="moz-signature" cols="72">--
Oleksandr Motornyi
PhD candidate
Laboratoire de Solides Irradies
Ecole Polytechnique (Palaiseau, France)</pre>
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