Title: Striped Superconductor in Rhombohedral Hexalayer Graphene Show Chinese title

Title: 菱形六层石墨烯中的条纹超导体

Abstract: The nature of a superconductor is fundamentally determined by the symmetries broken in its order parameter. Here, we report an exceptionally exotic superconducting phase in rhombohedral hexalayer graphene that simultaneously breaks rotational, translational, and time-reversal symmetries. We show that superconductivity emerges from a quarter-metallic state and is accompanied by the onset of stripe charge order. This unique intertwinement is revealed by angle-resolved transport measurements, which demonstrate dissipationless current confined to a single principal axis-forming one-dimensional-like superconducting channels -- while the orthogonal direction remains resistive down to the lowest temperatures. The formation of stripe order is marked by a first-order melting transition, evidenced by pronounced thermal hysteresis upon warming and cooling. In addition, magnetic-field-induced switching between superconducting states -- reminiscent of behavior previously observed in rhombohedral tetra- and pentalayer graphene -- signals time-reversal symmetry breaking. Collectively, these observations reveal a previously unrecognized quantum phase: a chiral superconductor embedded within a stripe-ordered anomalous Hall state. Show Chinese abstract

Abstract: 超导体的性质从根本上由其序参量中破缺的对称性决定。 在这里，我们在菱形六层石墨烯中报告了一种异常奇特的超导相，该相同时破缺旋转、平移和时间反演对称性。 我们表明，超导性起源于四分之一金属态，并伴随着条纹电荷序的出现。 这种独特的交织现象通过角分辨输运测量得以揭示，这些测量显示无耗散电流被限制在单一主轴上，形成类似一维的超导通道——而正交方向在最低温度下仍保持电阻。 条纹序的形成由一级熔化转变标记，这在升温与降温过程中表现出明显的热滞现象。 此外，磁场诱导的超导态之间的切换——类似于之前在菱形四层和五层石墨烯中观察到的行为——表明时间反演对称性的破缺。 总体而言，这些观察结果揭示了一个此前未被认识到的量子相：一种嵌入在条纹有序反常霍尔态中的手性超导体。