Majorana Crystal in Rhombohedral Graphene

Chiho Yoon; Fan Zhang

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arXiv · 2603.16828

Majorana Crystal in Rhombohedral Graphene

Chiho Yoon·Fan Zhang

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Abstract

Recent experiments in rhombohedral graphene report an unusual superconducting phase emerging from a spin- and valley-polarized quarter-metal state. The prevailing interpretation invokes chiral topological superconductivity, but the role of the `Fulde-Ferrell' phase factor due to intra-valley pairing has remained largely unexplored. Here we show, via a gauge transformation, that this phase is equivalent to an ordinary chiral topological superconductor on the triangular lattice, while simultaneously forming an extraordinary Majorana crystal on the dual honeycomb lattice reminiscent of the Haldane model.

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Chiho Yoon, Fan Zhang. 2026-03-17. Majorana Crystal in Rhombohedral Graphene. https://arxiv.org/abs/2603.16828

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