optimization using Quantum ESPRESSO:

  * VC-RELAX gave a lattice constant of 4.23 Å
  * RELAX gave a lattice constant of 5.82 Å

Hello,

"relax" does not give you a lattice constant, it uses whatever you gave it in input. If I were you, I would wonder why my initial guess was so far off (i.e. does it come from experiment, from literature calculations) and if there is a chance that my input was completely wrong (wrong convergence or wrong geometry).

hth


I'm a bit confused about which lattice constant I should use for my subsequent calculations. Could anyone advise on which value is more appropriate, or explain why there is such a difference between the two?
Thank you in advance for your help!


*Jonathan KONYI , PhD Student*
Centre Africain d'Excellence sur les Batteries(CAEB)

Département de Chimie Industrielle , Faculté Polytechnique
*/Université de Lubumbashi/*, Congo-Kinshasa

e-mail: konyi.kak...@unilu.ac.cd
Phone(WhatsApp) : +243998884423
Web page: https://sites.google.com/view/jonathan-konyi/acceuil?pli=1 <https://sites.google.com/view/jonathan-konyi/acceuil?pli=1>


_______________________________________________________________________________
The Quantum ESPRESSO Foundation stands in solidarity with all civilians 
worldwide who are victims of terrorism, military aggression, and indiscriminate 
warfare.
--------------------------------------------------------------------------------
Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
users mailing listus...@lists.quantum-espresso.org
https://lists.quantum-espresso.org/mailman/listinfo/users
--
Dr. Lorenzo Paulatto
IR IMPMC - CNRS UMR 7590 / Sorbonne Université / MNHN
phone: +33 (0)1 442 79822 / telegram: lpaulatto
http://www.impmc.upmc.fr/~paulatto/ - https://anharmonic.github.io/
23-24/423 B115, 4 place Jussieu 75252 Paris CX 05
_______________________________________________________________________________
The Quantum ESPRESSO Foundation stands in solidarity with all civilians 
worldwide who are victims of terrorism, military aggression, and indiscriminate 
warfare.
--------------------------------------------------------------------------------
Quantum ESPRESSO is supported by MaX (www.max-centre.eu)
users mailing list users@lists.quantum-espresso.org
https://lists.quantum-espresso.org/mailman/listinfo/users

Reply via email to