<div class="gmail_quote"><div>Dear Yanling,</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>I think this is unnormal. </div></div></blockquote>
<div><br></div><div><br></div><div>Why do you think it is unnormal? In high-symmetry materials and q-points it is perfectly normal to have onyl a few non-zero terms. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<br>For example, at G point, It is
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5.000000000000000E-003 0.762532099281104 6.62981783474504
<br></div></div></blockquote><div><br></div><div>What are these numbers?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><br>
DO you meet this case? Could you tell me the reason or how to correct it? </div></div></blockquote><div><br></div><div></div></div><div><br></div><div>Did your phonon dispersion look ok in the first place?<br clear="all">
<div>Did you actually compute the el-ph coupling and found it to be uncorrect?</div><div><br></div><div>best regards</div><div><br></div>-- <br><div>Dr. Lorenzo Paulatto </div><div>IdR @ IMPMC -- CNRS & Université Paris 6</div>
<div>phone: +33 (0)1 44275 084 / skype: paulatz</div><div>www: <a href="http://www-int.impmc.upmc.fr/~paulatto/" target="_blank">http://www-int.impmc.upmc.fr/~paulatto/</a></div><div>mail: 23-24/4é16 Boîte courrier 115, 4 place Jussieu 75252 Paris Cédex 05</div>
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