<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px"><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr">Dear all,</div><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr"><br></div><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr">I am doing spin polarized calculation of a half metal compound. My question is</div><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr"><br></div><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr">For optical properties, when we do step addjoint-updn_lapw what does it means? Does it combine the plot for both spin-up and spin-down? Can we represent the plot of real and imaginary parts for spin-up and spin-down separately? Or one plot which we get includes both spin-up and down? </div><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr"><br></div><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr">Regards,</div><div id="yui_3_16_0_1_1428151261388_9835" dir="ltr">Junaid</div></div></body></html>