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<p>Dear Wenliang Liu,</p>
<p>These inputs are described in the README for pw2z2pack: <a
href="https://github.com/Z2PackDev/Z2Pack/tree/master/2.1.x/examples/fp/pw2z2pack/src">https://github.com/Z2PackDev/Z2Pack/tree/master/2.1.x/examples/fp/pw2z2pack/src</a></p>
<p>They are needed only if you want to consider only the Chern
number in a specific symmetry eigenspace. In that case, 'isym' is
the index of the symmetry (w.r.t. the standard Quantum Espresso
output), and sym_eig is the symmetry eigenvalue of the considered
eigenspace.</p>
<p>Best regards,</p>
<p>Dominik Gresch<br>
</p>
<br>
<div class="moz-cite-prefix">On 01.10.2017 02:32, wlliu wrote:<br>
</div>
<blockquote type="cite"
cite="mid:tencent_6EFF3A027E13E92C05756E0D@qq.com">Dear Sir,<br>
<br>
My name is Wenliang Liu. I come from Xiangtan University,
Xiangtan,Hunan Provience, China.<br>
<br>
I'm writing to enquire about how I set these two parameters( isym
and sym_eig) in the file seedname.pw2z2.in. <br>
<br>
Thanks a lot and forward to hearing from you soon.<br>
<br>
Best Regards,<br>
Wenliang Liu<br>
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