<div dir="ltr"><div dir="ltr"><br></div><div>Dear Yuvam</div><div><br></div><div>please see below.</div><div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il giorno mer 28 ott 2020 alle ore 10:58 Yuvam Bhateja <<a href="mailto:yuvamb16@gmail.com">yuvamb16@gmail.com</a>> ha scritto:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Hello experts,<div dir="auto"><br></div><div dir="auto">I have been using Quantum ESPRESSO for my project and now I wanted to include DFT+U in my calculation.</div><div dir="auto"><br></div><div dir="auto">I was using lda_plus_u_kind = 0 (which only uses Hubbard_U parameter) along with Hubbard_J0.</div><div dir="auto">For example-</div><div dir="auto"><br></div><div dir="auto">lda_plus_u_kind=0</div><div dir="auto">Hubbard_U(1)=5.0</div><div dir="auto">Hubbard_J0(1)=0.48</div><div dir="auto"><br></div><div dir="auto">Using the above configuration my system converged perfectly.</div><div dir="auto"><br></div><div dir="auto">I wanted to know if I am doing something wrong here? Will the value of Hubbard_J0 be even considered if I am using lda_plus_u_kind=0?</div></div></blockquote><div><br></div><div><br></div><div>why do you think there is something wrong? <br></div><div>In order to understand whether J0 makes any difference just try without it and compare the results.<br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="auto"><br></div><div dir="auto">I wished to replicate the results in other softwares like SIESTA which only uses rotationally invariant scheme (i.e., equivalent to lda_plus_u=1).</div><div dir="auto">Can I use values of U=5.0 and J=0.48 as mentioned above in other DFT codes?</div></div></blockquote><div><br></div><div>strictly speaking they are not the same thing (unless J = J0 = 0). here is the reference for J0: PHYSICAL REVIEW B 84, 115108 (2011). But I don't know how similar the results would be.</div><div><br></div><div>HTH</div><div><br></div><div>Matteo</div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div dir="auto"><br></div><div dir="auto">Any suggestions would be very helpful.</div><div dir="auto"><br></div><div dir="auto">Regards</div><div dir="auto">Yuvam Bhateja</div></div>
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<a href="https://lists.quantum-espresso.org/mailman/listinfo/users" rel="noreferrer" target="_blank">https://lists.quantum-espresso.org/mailman/listinfo/users</a></blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div>Matteo Cococcioni<br></div><div>Department of Physics<br></div>University of Pavia<br>Via Bassi 6, I-27100 Pavia, Italy<br>tel +39-0382-987485<br><div>e-mail <a href="mailto:lucio.andreani@unipv.it" target="_blank">matteo.cococcioni@unipv.it</a></div></div></div></div></div></div></div></div>