Structure optimization: Revision history

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21 October 2024

18 October 2024

17 October 2024

16 October 2024

15 October 2024

  • curprev 09:1509:15, 15 October 2024Schlipf talk contribs 11,296 bytes +32 No edit summary
  • curprev 09:0509:05, 15 October 2024Schlipf talk contribs 11,264 bytes +11,264 Created page with "=== RMM-DIIS ({{TAG|IBRION}}=1) === For {{TAG|IBRION}}=1, a quasi-Newton (variable metric) algorithm is used to relax the ions into their instantaneous groundstate. The forces and the stress tensor are used to determine the search directions for finding the equilibrium positions (the total energy is not taken into account). This algorithm is very fast and efficient close to local minima, but fails badly if the initial positions are a bad guess (use {{TAG|IBRION}}=2 in t..."