[Pw_forum] Born effective charge

xirainbow nkxirainbow at gmail.com
Thu Apr 7 12:48:53 CEST 2011


Dear Paolo Giannozzi:
Thank you  very much for your correction:)
I couldn't imagine the physical meaning of imaginary part. I hope I can
understand it after reading the paper (PRB62,3735).

On Thu, Apr 7, 2011 at 4:35 PM, Paolo Giannozzi <giannozz at democritos.it>wrote:

>
> On Apr 7, 2011, at 9:40 , xirainbow wrote:
>
> > Based on the definition of Born effective charge, it is a  "real
> > symmetric matrix“.
>
> real, but not symmetric, in general
>
> P.
> ---
> Paolo Giannozzi, Dept of Chemistry&Physics&Environment,
> Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
> Phone +39-0432-558216, fax +39-0432-558222
>
>
>
>
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-- 
____________________________________
Hui Wang
School of physics, Fudan University, Shanghai, China
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