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In the vasp guide, http://cms.mpi.univie.ac.at/vasp/guide/node140.html, it says that SPRING=0 is the NEB method, but this webpage, http://theory.cm.utexas.edu/vasp/neb/, says that negative value for SPRING turns on nudging. Which is right?

How can one specify cNEB? LCLIMB=.TRUE. is that enough? I've done both NEB and cNEB calculations now, and there are no difference. Is cNEB a default in NEB-calculations in vasp now?
<span class='smallblacktext'>[ Edited ]</span>

Hi,

I dont think VASP supports CL-NEB. Why dont you use VASP TST tools?
http://theory.cm.utexas.edu/vasp/neb/

SPRING tag refers to the spring force between images and negative value turns on nudging.

Cheers