标题： 门可调扭曲双层石墨烯中的超导网络签名 显示英文标题

标题： Signature of gate tunable superconducting network in twisted bilayer graphene

摘要： 扭曲的范德华材料为研究二维超导性和量子相提供了一个可调平台。 使用光谱成像扫描隧道显微镜，我们研究了扭曲双层石墨烯中的超导态，并追踪它们从绝缘相的演化过程。 栅极依赖的光谱测量揭示了两个不同的区域：欠掺杂（{\nu }= -2.3）和最佳掺杂（{\nu }= -2.6）。 在欠掺杂区域，部分超导性出现，形成一个与非间隙区域交错的网络。 在最佳掺杂情况下，整个单元格表现出超导性，能隙大小调制与局部态密度呈反相关。 这种从绝缘相到调制超导体的栅极依赖转变揭示了配对行为中意想不到的空间层次结构，并提供了直接的微观见解，以约束莫尔系统中超导性的理论。 显示英文摘要

摘要： Twisted van der Waals materials provide a tunable platform for investigating two-dimensional superconductivity and quantum phases. Using spectra-imaging scanning tunneling microscopy, we study the superconducting states in twisted bilayer graphene and track their evolution from insulating phases. Gate-dependent spectroscopic measurements reveal two distinct regimes: under-doped ({\nu} = -2.3) and optimally doped ({\nu} = -2.6). In the under-doped regime, partial superconductivity arises, forming a network interspersed with non-gapped regions. At optimal doping, the entire unit cell demonstrates superconductivity, with gap size modulation showing an anti-correlation with the local density of states. This gate-dependent transition from an insulating phase to a modulated superconductor uncovers an unexpected spatial hierarchy in pairing behavior and offers direct microscopic insights to constrain theories of superconductivity in moir\'e systems.