<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Dear Fang,</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Unfornately I don't have any experience with the systems you are investigating, but I'll add my comments that might provide you some insights.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">The answer for your question is simple but will require some effort to accomplish it: you must test your system and make sure the properties are converged.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Convergence means the following: As you increase a given parameter that you are tracking, the results are not changing anymore.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">In order to achieve that for your systems, I would recommend two things:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">1) Look for the literature and check the parameters they used the same systems.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">2) Do a series of tests increasing the parameters at a point that the properties you are investigating are not changing anymore. We all know that for some systems these tests might be prohibitive (this is why the step 1 is so important). In that case, go for the best grid you can simulate and honestly note that on the reports. Just to remember you, if the DOS and total energy are converged, your tests for band structure can be only NSCF. But please MAKE A BACKUP of your ".save" folder (if you are using the wf_collect=.true.) because the NSCF messes up with the restart.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">I hope you find at least part of these insights useful.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Best regards,</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Filipe</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Sep 6, 2015 at 8:31 AM, Yue-Wen Fang <span dir="ltr"><<a href="mailto:yuewen.fang@gmail.com" target="_blank">yuewen.fang@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Dear all,<div><br></div><div>For a junction, e.g. Fe/MgO/Fe MTJ with a=b=2.8, c = 34 angstrom, a general DOS calculation usually require a kgrid as 11*11*1, however, could anyone tell me how many kpoints do I need to set for it in transmission calculation and complex band structure calculation, respectively?</div><div><br></div><div>Thank you in advance!</div><div><br></div><div>Bests</div><span class="HOEnZb"><font color="#888888"><div>Fang<br clear="all"><div><br></div>-- <br><div><div dir="ltr">------------------------------------------------------------------------------------------------------------<div>Yue-Wen FANG, PhD candidate<br><div><a style="font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)" href="http://clpm.ecnu.edu.cn/" target="_blank">Key Laboratory of Polar Materials and Devices, Ministry of Education</a><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><a href="http://english.ecnu.edu.cn/" target="_blank">East China Normal University </a></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><br></div></div><div><br></div><div><br></div></div></div></div>
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