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- From: verstraete@pcpm.ucl.ac.be
- To: "'forum@abinit.org'" <forum@abinit.org>
- Subject: Re: [abinit-forum] Cu and Au bulk modulus
- Date: Tue, 25 Feb 2003 12:30:05 +0100 (CET)
Hi,
both your ecut and your kpoints might not yet be converged: for optimal
convergence of FCC systems, you need shifts (Monkhorst Pack) like
nshiftk 4
shiftk 0.5 0.5 0.5
0.0 0.5 0.5
0.5 0.0 0.5
0.5 0.5 0.0
and even 8x8x8 might not be enough. For Au a colleague has gone to
12x12x12 and even higher. However your gold looks fairly good, depending
on what method was used in the other simulation.
For silver (a priori like Au) I needed a 50 Ha cutoff for good
results.
Ciao
Matthieu
--
===================================================================
Matthieu Verstraete mailto:verstraete@pcpm.ucl.ac.be
PCPM, Boltzmann, pl. Croix du Sud, 1 tel: 010/ 47 86 81
B-1348 Louvain-la-Neuve Belgium fax: 010/ 47 34 52
- Cu and Au bulk modulus, Barrera, G (Gustavo) , 02/25/2003
- Re: [abinit-forum] Cu and Au bulk modulus, verstraete, 02/25/2003
- Re: [abinit-forum] Cu and Au bulk modulus, David Clatterbuck, 02/25/2003
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