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2D Ferroionic States
In article number 2302419, Yishu Zhang, Yang Xu, Bin Yu, and co‐workers report the fabrication of a full 2D van der Waals heterostructure ferroelectric semimetal junction to unravel the conductive mechanism of CuInP2S6, and present a detailed phase diagram of the competing mechanisms and transition boundaries with temperature and an external electric field. Based on this understanding,...
The recently unfolded ferroionic phenomena in 2D van der Waals (vdW) copper–indium–thiophosphate (CuInP2S6 or CIPS) have received widespread interest as they allow for dynamic control of conductive switching properties, which are appealing in the paradigm‐shift computing. The intricate couplings between ferroelectric polarization and ionic conduction in 2D vdW CIPS facilitate the manipulation and...
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