<html><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:10pt"><div><span>Dear all</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span>I am trying to determine the frequency dependent polarisability of metals like <br></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span>Pt and Al using ph.x code. Here is the input I made for the case of Pt:</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier
New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span>phonons of pt at Gamma<br> &inputph<br> tr2_ph=1.0d-15,<br> trans=.false.,<br> fpol=.true.,<br> amass(1)=195.078,<br> prefix='Pt',<br> outdir='$TMP_DIR'<br> fildyn='pt.dynG',<br> /<br>0.0 0.0 0.0<br><br>FREQUENCIES<br> 4<br> 0.5d0<br> 1.0d0<br> 1.5d0<br> 5.0d0</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier New,courier,monaco,monospace,sans-serif;
background-color: transparent; font-style: normal;"><span>In the output file I don't have any value of polarizability. Do I need</span></div><div style="color: rgb(0, 0, 0); font-size: 13.3333px; font-family: Courier New,courier,monaco,monospace,sans-serif; background-color: transparent; font-style: normal;"><span>to modify or to add another parameter?<br></span></div><div> </div><div>Anne Justine ETINDELE</div></div></body></html>