论文标题
lanio $ _2 $/srtio $ _3 $接口的稳定性和电子特性
Stability and electronic properties of the LaNiO$_2$/SrTiO$_3$ interface
论文作者
论文摘要
无限层镍薄膜薄膜实现了一个有趣的高温超导性超导性的新平台，其中lanio $ _2 $ _2 $/srtio $ _3 $作为参考设置。我们讨论该系统基本接口的相对稳定性，并确定相应的电子带结构。我们发现与散装相比，我们发现实质性变化，尤其是与低能物理学的5 $ d $轨道贡献有关的变化，这可以完全用纯Ni-3 $ d $ flat乐队取代。因此，$ d^9 $的配置特征可以通过这些异质结构中普通的非渗透状态的额外界面成分来补充。
Infinite-layer nickelate thin films materialize an intriguing new platform for high-temperature unconventional superconductivity, with LaNiO$_2$/SrTiO$_3$ as reference setup. We discuss the relative stability of the elementary interfaces of this system and determine the corresponding electronic band structure. We find substantial changes compared to the bulk, in particular in relation to the 5$d$ orbital contributions to the low-energy physics which can be totally replaced by purely Ni-3$d$ flat bands. The $d^9$ configuration characteristic of cuprates can thus be supplemented by an extra interfacial ingredient destabilizing the normal non-superconducting state in these heterostructures.
