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Piezoelectric heterostructures

Breaking symmetry creates polar auxeticity

By forming a heterostructure interface, and by judicious choice of crystallographic orientation, piezoelectrics are developed that show expansion or contraction along all axes on application of an electric field.

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Fig. 1: Revealed auxetic piezoelectric effect in heterostructures.


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Correspondence to Anna N. Morozovska.

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Eliseev, E.A., Morozovska, A.N. Breaking symmetry creates polar auxeticity. Nat. Mater. 23, 37–38 (2024).

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