What is the periodic box size? I noted for MoS2 the smaller space between layers, the smaller band gap or vice versa)<br><br>пятница, 4 ноября 2016 г. пользователь Willy Kohn написал:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p>Si has a indirect band gap, so, you might want to check the
smallest gap in your calculation instead of at K point, I guess.<br>
</p>
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<div>On 2016/11/4 17:28, Максим Арсентьев
wrote:<br>
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<blockquote type="cite">Hi my old friend,
<div><br>
</div>
<div>You are now on QE forum, as I know GW in abinit allows get
correct band gap. Which approximation do the authors use?<br>
<br>
пятница, 4 ноября 2016 г. пользователь Andrey Chibisov написал:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear
Colleagues,<br>
I can not get the correct band gap for silicene.<br>
I used the pseudopotential and all the parameters as in the
work Appl. Phys. Lett. 106, 183107 (2015) (<a href="http://dx.doi.org/10.1063/1.4919885" target="_blank">http://dx.doi.org/10.1063/1.4<wbr>919885</a>).<br>
Please help me with pseudopotential.<br>
With ''Si.rel-pbesol-n-rrkjus-psl.0<wbr>.1.UPF''
pseudopotential I got the band gap about 0.7 eV in K point,
but according to work Appl. Phys. Lett. 106, 183107 it was 1.5
meV.<br>
<br>
--<br>
Best regards,<br>
Andrey Chibisov. Ph.D.<br>
Numerical method of mathematical physics Laboratory,<br>
Computational Center, Russian Academy of Sciences.<br>
Khabarovsk, Russia<br>
Web page: <a href="https://www.researchgate.net/profile/A_Chibisov" target="_blank">https://www.researchgate<wbr>.net/profile/A_Chibisov</a><br>
<a href="http://ru.linkedin.com/pub/andrey-chibisov/55/253/986/en" target="_blank">http://ru.linkedin.com/pub/and<wbr>rey-chibisov/55/253/986/en</a><br>
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<br>
<br>
-- <br>
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<div>Best wishes,</div>
<div>Maxim Arsent'ev, Ph.D. (Chemistry)</div>
<div>Laboratory of research of nanostructures</div>
<div>Institute of Silicate Chemistry of RAS</div>
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</blockquote><br><br>-- <br><div dir="ltr"><div><div dir="ltr"><div>Best wishes,</div><div>Maxim Arsent'ev, Ph.D. (Chemistry)</div><div>Laboratory of research of nanostructures</div><div>Institute of Silicate Chemistry of RAS</div></div></div></div><br>