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lammps/doc/html/_sources/fix_nve_eff.txt
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fix_nve_eff.txt
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.. index:: fix nve/eff
fix nve/eff command
===================
Syntax
""""""
.. parsed-literal::
fix ID group-ID nve/eff
* ID, group-ID are documented in :doc:`fix <fix>` command
* nve/eff = style name of this fix command
Examples
""""""""
.. parsed-literal::
fix 1 all nve/eff
Description
"""""""""""
Perform constant NVE integration to update position and velocity for
nuclei and electrons in the group for the :doc:`electron force field <pair_eff>` model. V is volume; E is energy. This creates a
system trajectory consistent with the microcanonical ensemble.
The operation of this fix is exactly like that described by the :doc:`fix nve <fix_nve>` command, except that the radius and radial velocity
of electrons are also updated.
Restart, fix_modify, output, run start/stop, minimize info
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
No information about this fix is written to :doc:`binary restart files <restart>`. None of the :doc:`fix_modify <fix_modify>` options
are relevant to this fix. No global or per-atom quantities are stored
by this fix for access by various :ref:`output commands <howto_15>`. No parameter of this fix can
be used with the *start/stop* keywords of the :doc:`run <run>` command.
This fix is not invoked during :doc:`energy minimization <minimize>`.
Restrictions
""""""""""""
This fix is part of the USER-EFF package. It is only enabled if
LAMMPS was built with that package. See the :ref:`Making LAMMPS <start_3>` section for more info.
Related commands
""""""""""""""""
:doc:`fix nve <fix_nve>`, :doc:`fix nvt/eff <fix_nh_eff>`, :doc:`fix npt/eff <fix_nh_eff>`
**Default:** none
.. _lws: http://lammps.sandia.gov
.. _ld: Manual.html
.. _lc: Section_commands.html#comm
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