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Beyond Crystals: Symmetry and Symmetry Breaking of Lattice Materials

Pu Zhang's picture

The point group symmetry of materials is closely related to their physical properties and quite important for material modelling. However, superlattice materials have more complex symmetry conditions than crystals due to their multilevel structural feature. Thus, a theoretical framework is proposed to characterize and determine the point group symmetry of non-magnetic superlattice materials systematically. A variety of examples are presented to show the symmetry features of superlattice materials in different dimensions and scales. In addition, the deformation-induced symmetry-breaking phenomenon is also studied for superlattice materials, which has potential
application in tuning physical properties by imposing a strain field.

See the attachment for the paper published in Proc Roy Soc A 2015

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PDF icon RSPA20150125.pdf1.11 MB
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