Dear Trinh, ibrav=0 mean no sym, or you use the automatic way of defining the kpoint grid <br>K_POINTS automatic<br>nkx nky nkz shiftx shifty shiftz <br><br>or if you can just write by hand a uniform kpoint grid (Monkhorst-Pack), as following:<br>
<br>integer :: ikz, iky, ikx, nk<br>real :: weight<br>real :: shiftx, shifty, shiftz<br><br>read(*,*) nkx, nky, nkz, shiftx, shifty, shiftz<br><br>nk=nkx*nky*nkz<br>weight=1.0/real(nk)<br>write(*,*) nk<br>do ikz=1,nkz<br>
do iky=1,nky<br>do ikx=1,nkx<br><br>write(*,"(4f15.9)") (real(ikx)-real(1.0)+shiftx)/real(nkx), (real(iky)-real(1.0)+shifty)/real(nky), &<br> (real(ikz)-real(1.0)+shiftz)/real(nkz), weight<br><br>enddo<br>
enddo<br>enddo<br><br>the program uses crystal coordinates. So from the output in the pwscf input file you should write<br><br>K_POINTS crystal<br>.......<br><br>bests<br><br>Layla<br><br><div class="gmail_quote">2012/2/15 Vo, Trinh (388C) <span dir="ltr"><<a href="mailto:Trinh.Vo@jpl.nasa.gov">Trinh.Vo@jpl.nasa.gov</a>></span><br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="font-size:14px;font-family:Calibri,sans-serif;word-wrap:break-word"><div><div>Dear All,</div>
<div><br></div><div>I run a scf calculation for a system, which is base center orthorhombic, (space group #36). In the output file, I obtained a list of kpoits in irreducible BZ. For ibrav > 0, I can use "kpoint.x" to generate the whole kpoint list in the BZ. For the case ibrav=0, is there a way that I can obtain something similar?</div>
<div><br></div><div>Thank you very much,</div><div><br></div><div>Trinh Vo</div><div>Computing group</div><div>JPL/CalTech </div></div></div>
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