在量子化磁场中电荷密度波与超导序共存
Coexisting Charge Density Wave and Superconducting Order in Quantizing Magnetic Fields
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中文总结 AI 辅助
研究在大位移场和强磁场下菱形六方层石墨烯中电荷密度波（CDW）和超导相的交织情况，通过CDW序解释强整数量子霍尔效应，发现超导相，揭示零磁场下二者相互作用新见解。
中文摘要 AI 辅助
电荷密度波（CDW）和超导性在强相互作用电子系统中都很常见。本文研究了菱形六方层石墨烯（R6G）在大位移场和强磁场中的CDW和超导相。CDW序伴随明显热滞，发现一系列强整数量子霍尔效应，还发现附近超导相，二者在可比温度尺度上发展且源于同一混合Landau能级流形。
英文摘要
Charge density wave (CDW) and superconductivity are both common in strongly interacting electron systems. While CDW order is ubiquitous in both quantum Hall systems and unconventional superconductors, superconductivity is generally suppressed by the strong magnetic fields required for Landau quantization. Here we investigate the intertwined CDW and superconducting phases of rhombohedral hexalayer graphene (R6G) in a large displacement field, which generates tunable flat band edges, and a strong magnetic field, which generates a manifold of nearly degenerate Landau levels. We find a series of integer quantum Hall effects with Hall conductance quantum numbers that deviate from nearby integer filling factors, an observation that can be explained only by CDW order that mixes many Landau levels. We also find a nearby superconducting phase stabilized by perpendicular magnetic fields and persists deep within the quantum Hall regime. This intertwinement provides new insight into superconductivity in R6G at zero magnetic field.
