<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><font class="Apple-style-span" face="Times" size="4"><span class="Apple-style-span" style="font-size: 16px;"><div>Dear Prof. Blaha, </div><div><br></div><div>I figured out where I made a mistake to run "x kram". </div><div>In the file of case.inkram, I need to put in the corresponding number of Gammas for Drude terms (when I want to add intraband contributions), which was </div><div>instructed clearly in UG. So for two columns, after I fed in 0.1 0.1 on the 5th line in case.inkram, the program </div><div>ran properly. </div><div><br></div><div>However, I still have two questions ---</div><div><br></div><div>1/ </div><div>Why is case.intra always empty after I run x joint with SWITCH=6?</div><div>I noticed after running x joint with switch=6, the case.joint stores the real and imaginary parts of epsilon.</div><div>I suspect these are intraband contributions. </div><div>Surely when I run "x joint" again with switch=4, this set of results will be erased. </div><div>So I guess case.intra might be a placeholder for them (that is, I can copy case.joint to case.intra </div><div>and then start running "x joint" with switch=4). But this set of results, as I now store in case.intra, is not needed </div><div>when I run "x kram". </div><div><br></div><div>2/</div><div>From the archive, you once made the following remark in relation to a question raised by Dr. Shima <span class="Apple-style-span" style="font-family: -webkit-monospace; white-space: pre; ">Kadkhodazadeh--</span></div><pre>>>PS: Intraband contributions are for metals ! Thus you should not even
</pre><div><span class="Apple-style-span" style="font-family: -webkit-monospace; white-space: pre; ">>>attempt them for GaAs. <span class="Apple-style-span" style="font-family: Times; white-space: normal; "></span></span></div><div><span class="Apple-style-span" style="font-family: -webkit-monospace; white-space: pre; "><span class="Apple-style-span" style="font-family: Times; white-space: normal; "> </span></span></div><div>I guess the reason is that GaAs is a band insulator. </div><div>But for metallic compounds (e.g., intermetallic heavy fermion metals, like CeCu_{6-x}Au_{x}), </div><div>I can still run "x joint" with switch=6 to get the intraband contributions and the plasma frequency. </div><div>Am I right? </div><div><br></div><div>Thanks for the advice,</div><div><br></div><div>Jianxin</div><div><br></div></span></font></body></html>