fix ID group-ID rhok nx ny nz K a
Examples:
fix bias all rhok 16 0 0 4.0 16.0 fix 1 all npt temp 0.8 0.8 4.0 z 2.2 2.2 8.0 # output of 4 values from fix rhok: U_bias rho_k_RE rho_k_IM |rho_k| thermo_style custom step temp pzz lz f_bias f_bias[1] f_bias[2] f_bias[3]
Description:
The fix applies a force to atoms given by the potential
as described in (Pedersen).
This field, which biases configurations with long-range order, can be used to study crystal-liquid interfaces and determine melting temperatures (Pedersen).
An example of using the interface pinning method is located in the examples/USER/misc/rhok directory.
Restrictions:
This fix is part of the MISC package. It is only enabled if LAMMPS was built with that package. See the Build package doc page for more info.
Related commands:
Default: none
(Pedersen) Pedersen, J. Chem. Phys., 139, 104102 (2013).