Skip to Content.
Sympa Menu

forum - Re: [abinit-forum] paw total energy computation.

forum@abinit.org

Subject: The ABINIT Users Mailing List ( CLOSED )

List archive

Re: [abinit-forum] paw total energy computation.


Chronological Thread 
  • From: TORRENT Marc <marc.torrent@cea.fr>
  • To: forum@abinit.org
  • Subject: Re: [abinit-forum] paw total energy computation.
  • Date: Mon, 05 Nov 2007 15:46:23 +0100
  • Organization: CEA-DAM

Emmanuel Arras a écrit :
Hello all,
I am using abinit with paw and I am getting strange total energies for a simple 8 Germanium atoms on a diamond lattice computation : /Etotal/ and /Etotal (DC)/ are completely different.
Etot and etotdc are equal when SCF cycle is strongly converged.
But there, in your case, there must be an error; it can be a new buggy developpement (for which people did not test the etot-etotdc comparison)...
You gave too few informations to help us to make an opinion.

Why would that be? Could it be the pseudo?
no, it can't !


Marc


Thanks

Emmanuel ARRAS



Here is what I get ( The results are well converged, <e-8 ).
/
Components of total free energy (in Hartree) :

Kinetic energy = 1.17111539934157E+02
Hartree energy = 3.14320558619736E+02
XC energy = -9.14828969648226E+01
Ewald energy = -4.03402072037406E+02
PspCore energy = 1.63251069409665E+01
Loc. psp. energy= -7.85367608365186E+02
Spherical terms = 9.18907825835712E+01
>>>>>>>>> Etotal= -7.40604589288985E+02

"Double-counting" decomposition of free energy:
Band energy = -6.91266218318575E+01
Ewald energy = -4.03402072037406E+02
PspCore energy = 1.63251069409665E+01
Dble-C XC-energy= -2.88542171104060E+02
Spherical terms = -1.72723062301667E+02
>>>> Etotal (DC)= -9.17468820334024E+02

/




Archive powered by MHonArc 2.6.16.

Top of Page