The negative capacitance (NC) effect in ferroelectrics and antiferroelectrics is promising to reduce power dissipation and enable energy storage applications. However, the limited electric field scale and hysteresis properties of NC effect in ferroelectrics and antiferroelectrics seriously limit its application in transistors and energy-storage supercapacitors. Here, an overall (non-local) static (hysteresis-free) NC effect is developed via energy landscape designing. The ferroelectric structure is introduced into the traditional antiferroelectric PbZrO₃ film, thus the single-well energy landscape is tuned to an upper convex function. This anomalous energy landscape generates a hysteresis-free and single-valued polarization-electric field behavior (P–E) curve with a negative slope (dP/dE < 0), which guarantees the NC effect is static and available over the entire electric field range. Such an NC effect in PbZrO₃ film is stabilized by connecting a dielectric Al₂O₃ layer in series. This finding advances the practical application of the NC effect, especially in transistors and supercapacitors.

中文翻译：

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通过能源景观设计构建整体静态负电容效应

铁电体和反铁电体中的负电容 (NC) 效应有望降低功耗并实现储能应用。然而，NC效应在铁电体和反铁电体中有限的电场尺度和滞后特性严重限制了其在晶体管和储能超级电容器中的应用。在这里，通过能量景观设计开发了整体（非局部）静态（无滞后）NC 效应。将铁电结构引入到传统的反铁电PbZrO ₃薄膜中，从而将单阱能量景观调整为上凸函数。这种反常的能量景观产生了无滞后和单值极化电场行为 ( P – E) 具有负斜率 (d P /d E  < 0) 的曲线，这保证了 NC 效应在整个电场范围内是静态的和可用的。_{PbZrO 3}膜中的这种NC效应通过串联电介质Al ₂ O ₃层来稳定。这一发现推动了 NC 效应的实际应用，尤其是在晶体管和超级电容器中。