<div dir="ltr">Also did you set nbnd properly? Comment it and re-run, but first check what you properly set geometry and coordinates.</div><div class="gmail_extra"><br><div class="gmail_quote">2016-11-04 15:26 GMT+03:00 Максим Арсентьев <span dir="ltr"><<a href="mailto:ars21031960@gmail.com" target="_blank">ars21031960@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">Are you sure what you properly set coordinates? <span style="color:rgb(0,0,0);font-size:14px">celldm(3)=c/a </span><font color="#000000"><span style="font-size:14px">= 0.678182368, so you have small c.</span></font><div><font color="#000000"><span style="font-size:14px">Could you check yoursef by opening output files in VESTA, xcrysden?</span></font></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">2016-11-04 15:09 GMT+03:00 Andrey Chibisov <span dir="ltr"><<a href="mailto:andreichibisov@yandex.ru" target="_blank">andreichibisov@yandex.ru</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Willy,<br>
Silicene have direct band gap in K-point (Appl. Phys. Lett. 106, 183107 (2015), Phys. Rev. Lett. 107, 076802 (2011)).<br>
I want to get correct electronic structure to make sure that other properties are trusty.<br>
<br>
<br>
04.11.2016, 19:55, "Willy Kohn" <<a href="mailto:willykohn@gmail.com" target="_blank">willykohn@gmail.com</a>>:<br>
<div><div class="m_-6199803220583675192h5">> 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>
><br>
> On 2016/11/4 17:28, Максим Арсентьев wrote:<br>
>> Hi my old friend,<br>
>><br>
>> 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>
>>> 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" rel="noreferrer" 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" rel="noreferrer" 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" rel="noreferrer" target="_blank">http://ru.linkedin.com/pub/and<wbr>rey-chibisov/55/253/986/en</a><br>
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>><br>
>> --<br>
>> Best wishes,<br>
>> Maxim Arsent'ev, Ph.D. (Chemistry)<br>
>> Laboratory of research of nanostructures<br>
>> Institute of Silicate Chemistry of RAS<br>
>><br>
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</div></div>> ,<br>
<div class="m_-6199803220583675192HOEnZb"><div class="m_-6199803220583675192h5">><br>
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<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" rel="noreferrer" 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" rel="noreferrer" target="_blank">http://ru.linkedin.com/pub/and<wbr>rey-chibisov/55/253/986/en</a><br>
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</div>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><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></div>
</div>