Topological chiral superconductivity of twised WSe<sub>2</sub> from antiferromagnetic correlations in moiré bands

ORAL

Abstract

Twisted bilayer WSe2 has recently emerged as a readily tunable platform to explore unconventional superconductivity near electronic orders. Motivated by the strong-correlation phenomenology observed near the superconducting phase in twisted bilayer WSe2 [1,2], we study multi-orbital (Kondo lattice) t-J models derived from different parameter regimes [3,4] and identify the possible superconducting pairing channels through symmetry-based classification and energetic analysis [5]. We highlight the natural emergence of topological superconductivity in this system, characterized by nonzero winding numbers in the Bogoliubov–de Gennes quasiparticle spectrum and the presence of robust edge modes that may be accessible in experiments. Broader implications of our results beyond moiré superconductivity will be discussed.

[1] Y. Xia et al., Nature 637, 833–838 (2025); arXiv:2508.02662 (2025)

[2] Y. Guo et al., Nature 637, 839–845 (2025).

[3] F. Xie et al., Phys. Rev. Lett. 134, 136503 (2025).

[4] F. Xie et al., arXiv:2503.21769.

[5] C. Li et al., arXiv:2507.21043.

*Work supported by DOE/BES Grant No. DE-SC0018197.

Publication: C. Li et al., arXiv:2507.21043.

Presenters

  • Chenyuan Li

    • Rice University

Authors

  • Chenyuan Li

    • Rice University
  • Fang Xie

    • Rice University
  • Jennifer Cano

    • Stony Brook University
  • Qimiao Si

    • Rice University