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.
@article{arxiv.2502.17555,
title = {Quarter Metal Superconductivity},
author = {Chiho Yoon and Tianyi Xu and Yafis Barlas and Fan Zhang},
journal= {arXiv preprint arXiv:2502.17555},
year = {2026}
}