[Pw_forum] IR calculation

[shoutian sun]

>Dear all,
>
>I want to calculate IR spectra(without external electronic field), should I have to set:  tefield = .TRUE. ?
>Or could anyone tell me how to use cp.x to calculate IR? And which paprameters should I have to
>care about?
>
>Thank you in advance,
>SUN ST
>



      ___________________________________________________________ 
  好玩贺卡等你发，邮箱贺卡全新上线！ 
http://card.mail.cn.yahoo.com/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20091005/67fd6dd4/attachment.html>