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PreprintarXiv licencearXiv

Chiral p-Wave Superconductivity Proximate to a Fractional Chern Insulator and a Topological Charge Density Wave in a Moiré Chern Band

  • Yunze Ouyang
  • Fengcheng Wu
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Abstract

We study a spin-polarized moiré Chern band of twisted MoTe2 with short-range repulsion, finding superconductivity proximate to a fractional Chern insulator at filling ν=2/3 and a topological charge density wave at ν=3/4. Exact diagonalization reveals pair binding over 0.7≲ν≲0.77, consistent with experiment, along with finite superfluid stiffness, chiral p-wave pairing correlations, and adiabatic connectivity to an attractive model. At weak repulsion, Kohn-Luttinger theory supports a Fermi-surface instability with the same pairing symmetry. The superconducting state has a Bogoliubov-de Gennes Chern number CBdG=−1, opposite to the normal-state Chern number at ν=1. Our results reveal interplay among superconductivity, fractional topology, and charge order.

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Cite

BibTeXRIS
BibTeX
@misc{ouyang2026chiral,
  title = {{Chiral $p$-Wave Superconductivity Proximate to a Fractional Chern Insulator and a Topological Charge Density Wave in a Moiré Chern Band}},
  author = {Yunze Ouyang and Fengcheng Wu},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.40469},
  eprint = {2610.40469},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.40469},
}
RIS
TY  - UNPB
TI  - Chiral p-Wave Superconductivity Proximate to a Fractional Chern Insulator and a Topological Charge Density Wave in a Moiré Chern Band
AU  - Yunze Ouyang
AU  - Fengcheng Wu
PY  - 2026
DA  - 2026/10/29
PB  - arXiv
DO  - 10.48550/arxiv.2610.40469
UR  - https://arxiv.org/abs/2610.40469
AB  - We study a spin-polarized moiré Chern band of twisted MoTe_2 with short-range repulsion, finding superconductivity proximate to a fractional Chern insulator at filling ν=2/3 and a topological charge density wave at ν=3/4. Exact diagonalization reveals pair binding over 0.7≲ν≲0.77, consistent with experiment, along with finite superfluid stiffness, chiral p-wave pairing correlations, and adiabatic connectivity to an attractive model. At weak repulsion, Kohn-Luttinger theory supports a Fermi-surface instability with the same pairing symmetry. The superconducting state has a Bogoliubov-de Gennes Chern number C_BdG=−1, opposite to the normal-state Chern number at ν=1. Our results reveal interplay among superconductivity, fractional topology, and charge order.
ER  -