Two-Dimensional Antiferroelectricity in Nanostripe-Ordered In 2 Se 3
作者： Chao Xu , Yancong Chen , Xiangbin Cai , Arno Meingast , Xuyun Guo
DOI: 10.1103/PHYSREVLETT.125.047601
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摘要: Abstract Two-dimensional (2D) layered materials have been an exciting frontier for exploring emerging physics at reduced dimensionality, with a variety of exotic properties demonstrated at 2D limit. Here, we report the first experimental discovery of in-plane antiferroelectricity in a 2D material β′− In 2 Se 3, using optical and electron microscopy consolidated by first-principles calculations. Different from conventional 3D antiferroelectricity, antiferroelectricity in β′− In 2 Se 3 is confined within the 2D layer and generates the unusual nanostripe …
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