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SYMMODES - Symmetry Modes

Symmetry Modes
The software package SYMMODES (Symmetry Modes) provides the necessary tools for a group-theoretical analysis of a structural phase transition. For a given group - subgroup pair G > H the program constructs the lattice of maximal subgroups relating G and H and calculates the corresponding primary and secondary modes.

SYMMODES has been developed in colaboration with H.Stokes and D.Hatch (Brigham Young University, Utah, USA).

Input Data: In order to obtain the group - subgroup lattice G>H, input or select the numbers of the group G, the subgroup H and the index of H in G.

How to obtain a valid index ?


More about the program.

Please, enter the sequential numbers of the group and the subgroup as given in the International Tables for Crystallography, Vol. A:
Enter the supergroup number (G) or choose it:
Enter the subgroup number (H) or choose it:
Enter the index [G:H]



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