Bilbao Crystallographic Server

The program k-SUBGROUPSMAG

Given a space group of a paramagnetic phase (gray group) and a magnetic propagation wave-vector, this program calculates all the posible magnetic space subgroups compatible with the propagation vector. The output of the program can be chosen to be the list of subgroups or a graph showing the subgroup-tree. In both cases the groups are grouped into conjugacy-classes. More information about the conjugacy-classes and the subgroups can be obtained: members of the conjugacy classes, transformation matrix to a standard or reference (default) setting of every group, lists of general positions, etc... All the groups are given in the BNS setting.

Alternative input data and optional filters for the output.

The program allows different input data sets and different conditions to be fulfilled by the subgroups given in the output. These are the alternative input/output conditions (ordered as in the main page of the program):

Alternative output.

By default, the program gives the list or graph of all the subgroups compatible with the given conditions. But, when the option Wyckoff positions of the magnetic atoms has been chosen, after the first (default) output, these two outputs can also been obtained:

If thew option Representations has been chosen, the default output gives the subgroups compatible with all the chosen representations. Once this first output is shown, it is possible to get the subgroups compatible with at least one chosen irrep.

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