"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Section_commands.html#comm)

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pair_style yukawa command :h3

[Syntax:]

pair_style yukawa kappa cutoff :pre

kappa = screening length (inverse distance units)
cutoff = global cutoff for Yukawa interactions (distance units) :ul

[Examples:]

pair_style yukawa 2.0 2.5
pair_coeff 1 1 100.0 2.3
pair_coeff * * 100.0 :pre

[Description:]

Style {yukawa} computes pairwise interactions with the formula

:c,image(Eqs/pair_yukawa.jpg)

Rc is the cutoff.

The following coefficients must be defined for each pair of atoms
types via the "pair_coeff"_pair_coeff.html command as in the examples
above, or in the data file or restart files read by the
"read_data"_read_data.html or "read_restart"_read_restart.html
commands, or by mixing as described below:

A (energy*distance units)
cutoff (distance units) :ul

The last coefficient is optional.  If not specified, the global yukawa
cutoff is used.

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[Mixing, shift, table, tail correction, restart, rRESPA info]:

For atom type pairs I,J and I != J, the A coefficient and cutoff
distance for this pair style can be mixed.  A is an energy value mixed
like a LJ epsilon.  The default mix value is {geometric}.  See the
"pair_modify" command for details.

This pair style supports the "pair_modify"_pair_modify.html shift
option for the energy of the pair interaction.

The "pair_modify"_pair_modify.html table option is not relevant
for this pair style.

This pair style does not support the "pair_modify"_pair_modify.html
tail option for adding long-range tail corrections to energy and
pressure.

This pair style writes its information to "binary restart
files"_restart.html, so pair_style and pair_coeff commands do not need
to be specified in an input script that reads a restart file.

This pair style can only be used via the {pair} keyword of the
"run_style respa"_run_style.html command.  It does not support the
{inner}, {middle}, {outer} keywords.

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[Restrictions:] none

[Related commands:]

"pair_coeff"_pair_coeff.html

[Default:] none
