From edc24770cee0ea143da3fbfc9511fbf2484012ae Mon Sep 17 00:00:00 2001
From: pscrozi types values = two or more atom types
- delta_mu values = number_of_types-1 relative chemical potentials
+ delta_mu values = number_of_types-1 relative chemical potentials (energy units)
ke value = no or yes
no = no conservation of kinetic energy after atom swaps
yes = kinetic energy is conserved after atom swaps
@@ -78,17 +78,17 @@ ensures that the kinetic energy of each atom is the same after the swap as it
was before the swap, even though the atom masses have changed.
The semi-grand keyword can be set to yes to switch to the semi-grand -canonical ensemble, meaning that the total number of each particle type -does not need to be conserved. The default is no, which means that the -only kind of swap allowed exchanges an atom of one type with an atom of a -different given type. In other words, the relative mole fractions of the -swapped atoms remains constant. Whereas in the semi-grand canonical ensemble, -the composition of the system can change. Note that when using semi-grand, -all atoms in the fix group are eligible for attempted conversion to one of -the given types, even if its current type is not one of the given types. -An attempt is made to switch the selected atom to one of the listed -types with equal probability. Acceptance of each attempt depends upon the -Metropolis criterion. +canonical ensemble as discussed in (Sadigh). This means that the +total number of each particle type does not need to be conserved. The default +is no, which means that the only kind of swap allowed exchanges an atom of +one type with an atom of a different given type. In other words, the relative +mole fractions of the swapped atoms remains constant. Whereas in the +semi-grand canonical ensemble, the composition of the system can change. Note +that when using semi-grand, all atoms in the fix group are eligible for +attempted conversion to one of the given types, even if its current type is +not one of the given types. An attempt is made to switch the selected atom to +one of the listed types with equal probability. Acceptance of each attempt +depends upon the Metropolis criterion.
The delta_mu keyword allows users to specify non-zero chemical potentials for each of the atom types. All chemical potentials are relative to the first @@ -185,4 +185,9 @@ all atom types.
(Sadigh) B Sadigh, P Erhart, A Stukowski, A Caro, E Martinez, and +L Zepeda-Ruiz, Phys. Rev. B, 85, 184203 (2012). +