The ABINIT Users Mailing List ( CLOSED )

[shaltaf@pcpm.ucl.ac.be]

Dear Yong Liu,

In such case one shall think to go beyond PPM approximation -to be implemnted
soon in ABINIT- or may be to choose another PPM, so why dont you try with PPM 
of
Hybertsen and Louie (ppmodel 2). The later PPM does not depond on (ppmfreq
parameter), it uses only the dielectric matrix calculated on zero frequency 
and
proceed toward the dynamical dependence by employing 'f sum rules'.

-- 
Riad Shaltaf UCL/SE/FSA/MAPR/PCPM
Tel: +32 (0)10 47 81 91 BÃtiment Boltzmann, a+1
Fax: +32 (0)10 47 34 52 1 place Croix du Sud
Mel: shaltaf@pcpm.ucl.ac.be 1348 Louvain-la-Neuve (Belgique)  

-------------------------------------------------
This mail sent through IMP: atlas.pcpm.ucl.ac.be