Article Dans Une Revue Acta Crystallographica Section A : Foundations and Advances [2014-...] Année : 2020

Groupoid description of modular structures

Résumé

Modular structures are crystal structures built by subperiodic (zero-, mono-or diperiodic) substructures, called modules. The whole set of partial operations relating substructures in a modular structure build up a groupoid; modular structures composed of identical substructures are described by connected groupoids, or groupoids in the sense of Brandt. A general approach is presented to describe modular structures by Brandt's groupoids and how to obtain the corresponding space groups, in which only the partial operations that have an extension to the whole crystal space appear.

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hal-02563857 , version 1 (05-05-2020)

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Massimo Nespolo, Bernd Souvignier, Berthold Stöger. Groupoid description of modular structures. Acta Crystallographica Section A : Foundations and Advances [2014-..], 2020, 76 (3), pp.334-344. ⟨10.1107/S2053273320000650⟩. ⟨hal-02563857⟩
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