论文标题
莫伊尔支持的拓扑超导性
Moiré-enabled topological superconductivity
论文作者
论文摘要
寻找人工拓扑超导性的搜索受到其出现所需的严格条件的限制。如扭曲的范德华材料中各种相关电子状态的最新发现所示，Moiré模式可以作为创建人工电子结构的强大旋钮。在这里，我们证明了范德华超导体和单层铁磁体之间的moiré模式会产生周期性的潜在调制，从而实现拓扑超导状态，而在没有莫伊尔（Moiré）的情况下，该状态将无法获得。磁性moiré模式产生了Yu-Shiba-Rusinov Minibands，并使用低温扫描隧道显微镜（STM）和光谱法（STS）检测到Majorana边缘模式的周期性调制。 Moiré模式以及更广泛的定期潜在调制是克服实现和控制拓扑超导性的常规约束的强大工具。
The search for artificial topological superconductivity has been limited by the stringent conditions required for its emergence. As exemplified by the recent discoveries of various correlated electronic states in twisted van der Waals materials, moiré patterns can act as a powerful knob to create artificial electronic structures. Here, we demonstrate that a moiré pattern between a van der Waals superconductor and a monolayer ferromagnet creates a periodic potential modulation that enables the realization of a topological superconducting state that would not be accessible in the absence of the moiré. The magnetic moiré pattern gives rise to Yu-Shiba-Rusinov minibands and periodic modulation of the Majorana edge modes that we detect using low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS). Moiré patterns and, more broadly, periodic potential modulations are powerful tools to overcome the conventional constrains for realizing and controlling topological superconductivity.
