<div>Hi Dear User</div>
<div>I think you should use LSDA approximation for running LDA+U and after if you read the user guide you could see </div>
<div>That you shoud find the existing file and then constract some </div>
<div>information ,depend on your compound.</div>
<div>and after that you should run the SCF.(+ lO).</div>
<div>Bye<br><br> </div>
<div><span class="gmail_quote">On 6/1/06, <b class="gmail_sendername"><a href="mailto:zhylimin@sohu.com">zhylimin@sohu.com</a></b> <<a href="mailto:zhylimin@sohu.com">zhylimin@sohu.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>
<div>Dear Wien users & developers,
<p>I have recently done some calcuations on AlN doped with Er. LDA+U method
<p>
<p>is used to treate Er 4f electrons. Here are my operations step by step:
<p>
<p>1. A directory named AlN is created;
<p>
<p>2. input-files such as AlN.struct, AlN.inst, AlN.indm and AlN.inorb is created.
<p>
<p>3. init_lapw (GGA, no add-inversion and spin-polarized are selected in this step);
<p>
<p>4. [hust@icesword AlN]$ runsp_lapw -orb
<p>LAPW0 END
<p>LAPW1 END
<p>LAPW1 END
<p>LAPW2 END
<p>LAPW2 END
<p>
<p>after LAPW2, SCF terminated without LAPWDM and LCORE...etc steps. I do know if my operations
<p>
<p>
<p>is correct. Could you tell me the detail steps on how to us LDA+U method?
<p>
<p>
<p>Thank you for your helpl
<p>
<p>
<p>Regards,
<p>
<p>
<p>Zhang
<p>
<p>Appendix:some input-files:
<p>AlN.indm:
<p>------------------------------------------
<p>-9. Emin cutoff energy
<p>1 number of atoms for which density matrix is calcul! ated
<p>2 1 3 index of 1st atom, number of L's, L1
<p>0 0 r-index, (l,s)index
<p>-----------------------------------------
<p>
<p>AlN.inorb:
<p>-----------------------------------------
<p>1 1 0 nmod, natorb, ipr
<p>BROYD 0.3 BROYD/PRATT, mixing
<p>2 1 3 iatom nlorb, lorb
<p>1 nsic 0..AFM, 1..SIC, 2..HFM
<p>2.59 0.7 U J (Ry)
<p>---------------------------------------
<p>
<p>
<p>一步登天就是这么简单!
<p>
<p>
<p>
<p>
<p>
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