Constrained DFT-MD

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Hasan Tunçer

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Nov 3, 2025, 3:18:13 AM (yesterday) Nov 3
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Hello,

I’m running constrained DFT-MD in CP2K and trying to reduce a bond distance from 3.00 Å to 1.50 Å in two steps.

  • Step 1 (3.00 → 2.25 Å): worked as expected.

  • Step 2 (2.25 → 1.50 Å): I restart from the step-1 run, but the distance stays at 2.25 Å throughout and never moves toward 1.50 Å

What might be the reason for that? Please find the input file as attached.

Regards,
Hasan
input_npt.inp

Marcella Iannuzzi

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Nov 3, 2025, 5:45:34 AM (yesterday) Nov 3
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Hello, 

Try to set 
in EXT_RESTART section

Regards
Marcella
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