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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='color:black'>Thank you, Paolo. I have already asked the similar question some months before and I have done the suggestion Ghadiyali advised, but I still failed to remove the negative frequency.<o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:等线'>发件人<span lang=EN-US>:</span></span></b><span lang=EN-US style='font-size:11.0pt;font-family:等线'> Paolo Giannozzi [mailto:p.giannozzi@gmail.com] <br></span><b><span style='font-size:11.0pt;font-family:等线'>发送时间<span lang=EN-US>:</span></span></b><span lang=EN-US style='font-size:11.0pt;font-family:等线'> 2018</span><span style='font-size:11.0pt;font-family:等线'>年<span lang=EN-US>3</span>月<span lang=EN-US>19</span>日<span lang=EN-US> 18:55<br></span><b>收件人<span lang=EN-US>:</span></b><span lang=EN-US> Quantum Espresso users Forum <users@lists.quantum-espresso.org><br></span><b>主题<span lang=EN-US>:</span></b><span lang=EN-US> [QE-users] Mailing list archives<o:p></o:p></span></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div><p class=MsoNormal><span lang=EN-US>Searchable archives for the old mailing list <a href="mailto:pw_forum@pwscf.org">pw_forum@pwscf.org</a> and for this mailing list have been merged, courtesy of the administrators of the <a href="http://mail-archive.com">mail-archive.com</a> web site. They can be found at<br> <a href="https://www.mail-archive.com/users@lists.quantum-espresso.org/">https://www.mail-archive.com/users@lists.quantum-espresso.org/</a><o:p></o:p></span></p><div><div><p class=MsoNormal><span lang=EN-US><br>Paolo<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US>-- <o:p></o:p></span></p><div><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US>Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,<br>Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>Phone +39-0432-558216, fax +39-0432-558222<o:p></o:p></span></p></div></div></div></div></div></div></div></div></div></body></html>