论文标题
多性氧化物超级晶格中的拓扑顺序变化尺寸引起的变化
Dimensionality-induced change in topological order in multiferroic oxide superlattices
论文作者
论文摘要
我们构建铁电（lufeo3）m/（lufe2O4）超晶格，具有不同的索引m，以研究限制对拓扑缺陷的影响。我们观察到从中性到带电域壁的厚度依赖性转变以及分数涡流的出现。在薄的Lufeo3层中，域壁的体积分数生长，在达到非极性p63/MMC状态之前，将对称性从p63cm降低到P3C1，类似于高温铁电到副透射过渡。我们的研究表明，尺寸限制是如何稳定质地以外的质地。
We construct ferroelectric (LuFeO3)m/(LuFe2O4) superlattices with varying index m to study the effect of confinement on topological defects. We observe a thickness-dependent transition from neutral to charged domain walls and the emergence of fractional vortices. In thin LuFeO3 layers, the volume fraction of domain walls grows, lowering the symmetry from P63cm to P3c1 before reaching the non-polar P63/mmc state, analogous to the high-temperature ferroelectric to paraelectric transition. Our study shows how dimensional confinement stabilizes textures beyond those in bulk ferroelectric systems.
