Quarter Metal Superconductivity

Chiho Yoon; Tianyi Xu; Yafis Barlas; Fan Zhang

doi:10.1103/fcdc-9lm3

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arXiv · 2502.17555

Quarter Metal Superconductivity

Chiho Yoon·Tianyi Xu·Yafis Barlas·Fan Zhang

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Abstract

We investigate the recently discovered multiple superconducting states in rhombohedral graphene quarter metal. We demonstrate that one of these states features a single-spin, single-valley, single-band, single-Fermi-pocket parent state and is most likely a chiral topological pair-density wave, marked by a threefold symmetry that may not be spontaneously broken, unpaired Majorana zero modes at edges, vortices, and dislocations, and an anomalous intrinsic superconducting diode effect.

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Chiho Yoon, Tianyi Xu, Yafis Barlas, Fan Zhang. 2025-02-24. Quarter Metal Superconductivity. https://doi.org/10.1103/fcdc-9lm3

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