论文标题
铁电 - 父母异质结构中的量子相变
Quantum phase transition in ferroelectric-paraelectric heterostructures
论文作者
论文摘要
通过非热调谐参数之间的铁电性和量子副型之间的相变可导致量子关键行为和相关的新兴现象。但是，尽管铁电材料丰富，但铁电量子关键系统很少。在这里，我们从理论上表明，在铁电 - 正确异质结构中，可以通过量子温度抑制量子温度（即，量子温度下方的温度下方的温度被量子波动抑制）可以通过厚度比调节量子温度（即，量子温度以下温度下方抑制了量子温度（即，低于低于铁电的温度）是合理的。反过来，这可以使用厚度比作为调谐参数来实现有效铁电和量子降压状态之间的量子相变。相关的量子关键区域在铁电量子关键性领域提供了意外的前景。
Phase transition between ferroelectricity and quantum paraelectricity via non-thermal tuning parameters can lead to quantum critical behavior and associated emergent phenomena. Ferroelectric quantum critical systems are, however, rare despite the abundance of ferroelectric materials. Here, we show theoretically that in ferroelectric-paraelectric heterostructures, it is plausible to induce quantum paraelectricity where the quantum temperature (i.e., the temperature below with the onset of ferroelectricity is suppressed by quantum fluctuations) can be tuned by the thickness ratio. This, in turn, can effect a quantum phase transition between effective ferroelectric and quantum paraelectric states, using the thickness ratio as the tuning parameter. The associated quantum critical region offers unexpected prospects in the field of ferroelectric quantum criticality.
