论文标题
srruo $ _3 $ -Srtio $ _3 $异构结构是研究Sr $ _ {2} $ ruo $ _ {4} $的非常规超导性的可能平台
SrRuO$_3$-SrTiO$_3$ heterostructure as a possible platform for studying unconventional superconductivity in Sr$_{2}$RuO$_{4}$
论文作者
论文摘要
截骨酸锶的非常规超导性存在激烈的争议，其中各种理论和实验研究表明了多样化和相互排斥的配对对称性。目前，研究仅集中在一种材料SR2RUO4上，而该领域缺乏比较靶标。在这里，采用了基于密度功能理论的分析，我们表明由SRRUO3和SRTIO3组成的异质结构具有SR2RUO4的所有关键特征，并且原则上可以持有超导性。此外，我们表明，可以通过外延应变工程来调节竞争磁相和相关的挫败感，自然会影响超导状态。因此，该系统提供了一个出色的平台，可以更深入地了解清单中的超导性。
There is intense controversy around the unconventional superconductivity in strontium ruthenate, where the various theoretical and experimental studies suggest diverse and mutually exclusive pairing symmetries. Currently, the investigation is solely focused on only one material, Sr2RuO4, and the field suffers from the lack of comparison targets. Here, employing a density functional theory based analysis, we show that the heterostructure composed of SrRuO3 and SrTiO3 is endowed with all the key characteristics of Sr2RuO4, and, in principle, can host superconductivity. Furthermore, we show that competing magnetic phases and associated frustration, naturally affecting the superconducting state, can be tuned by epitaxial strain engineering. This system thus offers an excellent platform for gaining more insight into superconductivity in ruthenates.
