<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;">Dear Wien2k users,</div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><br></div><div style="text-align: justify; background-color: transparent;"><font face="times new roman, new york, times, serif">I want to ask about the calculation of the plasma frequency. In fact, I am trying to calculate the magneto-optical properties, why I introduced the spin-orbit coupling in my calculations and I will then calculate the optical conductivity. Since my crystal is likely half-mettalic, I must take into account intra-band transitions, for that I have to calculate the Drude term which contains the plasma frequency. I know the Drude formula, but my question is how from the WIEN2k code I can get the value
of this frequency?</font><br></div><div style="text-align: justify; background-color: transparent;"><font face="times new roman, new york, times, serif"><div style="background-color: transparent;"> Any answer can help me.</div><div style="background-color: transparent;">Thank you for your cooperation</div><div style="background-color: transparent;"><br></div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal;">Dr. Houda Ben Abdallah</div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal;">Faculty of Science. Physics departement. </div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal;">Condensed Matter Laboratory
(LPMC)</div><div style="background-color: transparent; color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; font-style: normal;">Tunis. TUNISIA</div></font></div><div class="MsoNormal" style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; text-align: justify;"><!--[endif]--><span style="font-family:
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