Dear Virginie.<span style="font-size: 10.5pt; font-family: Consolas;" lang="EN-US"><br></span><br>2011/4/18 TRINITE Virginie <span dir="ltr"><<a href="mailto:virginie.trinite@thalesgroup.com">virginie.trinite@thalesgroup.com</a>></span><br>
<div class="gmail_quote"><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div link="blue" vlink="purple" lang="FR">
<div>
<p class="MsoNormal"><span lang="EN-US">Dear all,</span></p>
<p class="MsoNormal"><span lang="EN-US">I try to use PWCOND, and I have two
questions:</span></p>
<p class="MsoNormal" style="text-indent: 35.4pt;"><span lang="EN-US">>In which
units are the boundary in the input file (bdl, bds, bdr)?</span></p>
<p class="MsoNormal" style="text-indent: 35.4pt;"><span lang="EN-US"> </span></p>
<p class="MsoNormal" style="margin-left: 35.4pt;"><span lang="EN-US"></span></p></div></div></blockquote><div><br> They are in alat units.<br> </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div link="blue" vlink="purple" lang="FR"><div><p class="MsoNormal" style="margin-left: 35.4pt;"><span lang="EN-US">>I have run
the two examples 12 and 22 without problem and found results in agreement with
the publications but when</span></p>
<p class="MsoNormal" style="margin-left: 35.4pt;"><span lang="EN-US">I try a more
heavy system, I obtain zero conductance.</span></p>
<p class="MsoNormal" style="margin-left: 35.4pt;"><span lang="EN-US">The example that
I have used, is the Magnetic Tunnel Junction given in Alexandre Smogounov’s
home page.</span></p>
<p class="MsoNormal" style="margin-left: 35.4pt;"><span lang="EN-US">The program
finished normally without error or complain but all the transmission are nearly
zero. </span></p>
<p class="MsoNormal"><span lang="EN-US">I didn’t check any convergence,
because I want only to test the program. Did I miss something?</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p></div></div></blockquote><div><br> I think it is normal since here you have a tunneling through an insulating spacer and TMR effects.<br> The conductances should get larger if you decrease the number of isolating layers. <br>
<br>All the best,<br>Alexander<br><br></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">_______________________________________________<br>
Pw_forum mailing list<br>
<a href="mailto:Pw_forum@pwscf.org">Pw_forum@pwscf.org</a><br>
<a href="http://www.democritos.it/mailman/listinfo/pw_forum" target="_blank">http://www.democritos.it/mailman/listinfo/pw_forum</a><br>
<br></blockquote></div><br>