论文标题
通过在bernal双层石墨烯中通过虚拟隧道来增强超导性，耦合到WSE $ _2 $
Enhanced superconductivity through virtual tunneling in Bernal bilayer graphene coupled to WSe$_2$
论文作者
论文摘要
在最近的实验[ARXIV：2205.05087]中，我们研究了一种可能的机制，该机制由于近距离的WSE $ _2 $单层而增强了孔掺杂的Bernal Bernal双层石墨烯的超导性。我们表明，WSE $ _2 $和BERNAL双层石墨烯之间的虚拟隧道（已知会诱导Ising Spin-Orbit耦合）可以在两个孔之间产生一个附加的吸引力，从而为增强Bernal BileSailer birayer石墨烯的超导性提供了潜在的解释。使用微观层间隧道，我们得出了Ising自旋轨道耦合和有效吸引力，作为Bernal Birayer石墨烯与WSE $ _2 $单层之间的扭角功能。我们的理论为Ising旋转轨道耦合和超导性增强之间的相互交织的关系提供了直观和物理的解释，这应该激发未来的研究。
Motivated by a recent experiment [arXiv:2205.05087], we investigate a possible mechanism that enhances superconductivity in hole-doped Bernal bilayer graphene due to a proximate WSe$_2$ monolayer. We show that the virtual tunneling between WSe$_2$ and Bernal bilayer graphene, which is known to induce Ising spin-orbit coupling, can generate an additional attraction between two holes, providing a potential explanation for enhancing superconductivity in Bernal bilayer graphene. Using microscopic interlayer tunneling, we derive the Ising spin-orbit coupling and the effective attraction as functions of the twist angle between Bernal bilayer graphene and the WSe$_2$ monolayer. Our theory provides an intuitive and physical explanation for the intertwined relation between Ising spin-orbit coupling and superconductivity enhancement, which should motivate future studies.
