[Wien] enthalpy and RMt

Stefaan Cottenier Stefaan.Cottenier at fys.kuleuven.be
Mon Oct 9 22:45:50 CEST 2006


>   if I want to caculate the enthalpy of formation of a compound AB :
>   DH= Etot(AB)(solid)-Etot(A)(solid)-E(B)(solid)
>   my questions is if i could change the RMt of the element A and B   
> in theire solid stats (pur) or  i must save the same Rmt used in the  
>  compounds AB?

The same. When comparing energies for different solids, all parameters  
that can be kept identical (R0, Rmt, RKmax, Gmax, ...) should be kept  
the same. (The k-mesh can vary, but should be similarly dense -- which  
is not a problem at all if it is converged).

Stefaan

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