Tailored sliding ferroelectricity for ultrahigh fatigue resistance in stacked trilayer MoS<sub>2</sub> crystals.

In previous studies, stacking configurations can be categorized into two distinct types for clearer analysis: (i) pure R-stacking, where the ferroelectric polarization increases with the number of layers from AA to AAA and then to AAAA, and (ii) mixed H-stacking, where the ferroelectric polarization exhibits a decreasing trend compared to the pure phase, from AAB to ABB in the trilayer system, and from AAAB to ABBB in the tetralayer system.

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