<div>Dear User£º</div>
<div> I calculation the optic properties of NaCl; the dielectric constant is 9.0; but the experimental value is ~ 6.0, Is't wrong with my calculation?</div>
<div> I got the value by this flow:</div>
<div> run_lapw </div>
<div> x kgen</div>
<div> edit nacl.in2 "FERMI, TETRA 101"</div>
<div> run_lapw -s lapw1 -e lcore</div>
<div> x optic</div>
<div> x joint</div>
<div> x kram</div>
<div> the input files are :</div>
<div> nacl.inop <br clear="all">286 1 number of k-points, first k-point <br>-5.0 1.0 Emin, Emax for matrix elements<br>2 <br>1 Re xx<br>3 Re zz<br>ON ON/OFF writes MME to unit 4
</div>
<div> nacl.injoint</div>
<div> 1 14 : LOWER AND UPPER BANDINDEX<br> 0.0000 0.00100 1.0000 : EMIN DE EMAX FOR ENERGYGRID IN ryd <br>eV : output units eV / ryd / cm-1<br> 4 : SWITCH
<br> 2 : NUMBER OF COLUMNS<br> 0.1 0.1 0.3 </div>
<div> nacl.inkram</div>
<div> 0.00 <br> 0.0 </div>
<div> 0 <br> 12.60 plasma frequencies (from joint, opt 6)<br> 0.20 Gammas for Drude terms <br> </div>
<div>Thanks for all advices!!!!!! I am crazy for the dielectric constant now:)</div>
<div> Pengfei<br><br>-- <br>--------------------------------------------------------------------------<br>Guan Pengfei, Ph. D<br>Inst.f. Physics, Tsinghua U, Beijing, China
<br>Phone: +86-010-6218-2756 Mobile: +86-138-1060-9671<br>Email: <a href="mailto:miracle.fei@gmail.com">miracle.fei@gmail.com</a> <br>WWW: <a href="http://www.phys.tsinghua.edu.cn">http://www.phys.tsinghua.edu.cn</a>
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