• Accepted Paper

Chiral skyrmionic superconductivity from doping a Chern Ferromagnet

Miguel Gonçalves, Kun Yang, and Shi-Zeng Lin

Phys. Rev. Lett. - Accepted 22 October, 2026

DOI: https://doi.org/10.1103/gd1k-s125

Abstract

We show that chiral superconductivity can be stabilized by hole doping a Chern ferromagnet. Performing exact diagonalization and density-matrix-renormalization-group calculations on the repulsive Kane–Mele–Hubbard model at hole doping relative to filling ν = 1 electron per unit cell, we find that a Cooper pair formed by a magnon (spin-flip excitation) bound to two holes is stabilized at sufficiently strong interactions and sufficiently large Ising spin–orbit coupling (SOC). This Cooper pair exhibits both finite spin chirality—signaling a noncoplanar skyrmionic spin texture—and chiral f-wave symmetry. The pairing and spin chirality are set by the Chern number/polarization of the parent Chern ferromagnet. We further find that interactions between skyrmion Cooper pairs evolve from repulsive to attractive as the Ising SOC increases, revealing an intermediate-SOC region where chiral superconductivity can emerge from condensation of hole-skyrmion Cooper pairs. Our findings provide a novel microscopic mechanism for chiral superconductivity and may be relevant for the recent observation of superconductivity in MoTe2 moiré superlattice.

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