<div dir="ltr">Dear Ben,<br><div><span style="color:rgb(37,37,37);font-family:sans-serif;line-height:22.399999618530273px">BLYP</span><span style="font-family:arial,sans-serif"> exchange-correlation functional</span> is a GGA functional with<span style="color:rgb(37,37,37);font-family:sans-serif;line-height:22.399999618530273px"> Becke for the exchange part and Lee, Yang and Parr for the correlation part.</span></div>
<div><span style="color:rgb(37,37,37);font-family:sans-serif;line-height:22.399999618530273px"><br></span></div><div><span style="color:rgb(37,37,37);font-family:sans-serif;line-height:22.399999618530273px">Olayinka A. S.</span></div>
<div><font color="#252525" face="sans-serif"><span style="line-height:22.399999618530273px">Ph.D Student</span></font></div><div><font color="#252525" face="sans-serif"><span style="line-height:22.399999618530273px">UNIBEN, Nigeria</span></font></div>
<div class="gmail_extra"><br><br><div class="gmail_quote">On 16 May 2014 18:46, BENYAHIA NEZHA <span dir="ltr"><<a href="mailto:benyahia-nezha@hotmail.fr" target="_blank">benyahia-nezha@hotmail.fr</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr"><div><div>Dear Quantum espresso users,</div><div><br></div><div> I have used the Blyp exchange-correlation functional for 'N' element and PZ (lda) for 'Ga' to calculate phonons of GaN. Initially I thought that the Blyp exchange-correlation is a member of Lda family, but after doing some research i found that it was a GGA's family. Is it correct? Plz confirm me that. If it is the case why the calculation was done normally in the esspresso5.0.2 but it crashes on esspresso 4.1.2 with a message error "inconsistent functional" without forgetting that the two functional must be the same (lda/lda or gga/gga).</div>
<div>Plz clarify me this, and i'll apreciate if you help me. </div></div><div><br></div><div><br></div><div>Regards.</div><div>Nh Ben</div> </div></div>
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