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Research dossier · version 1 · updated Oct 30, 2026

Moire & 2D Superconductivity: State of the Field (October 2026)

Covers superconductivity in magic-angle twisted bilayer graphene, twisted WSe2 bilayers and rhombohedral multilayer graphene, with the open questions on pairing, gap structure and symmetry. The main takeaway is that superconductivity in magic-angle graphene is well documented by transport and tunneling, while its pairing mechanism, its relation to correlated insulators and its chiral or nematic character remain contested. The reports in twisted WSe2 and rhombohedral graphene are more recent, and the rhombohedral result is still a preprint.

3,310 words39 sources26 evidence-mapped claims10 benchmarks17 timeline events✓ citation-verified Oct 30, 2026

AI-assisted synthesis of the cited literature, independently fact-checked against its sources; not peer reviewed.

Contents

  1. Executive summary
  2. Background and core concepts
  3. Timeline of key milestones
  4. State of the art
  5. Magic-angle twisted bilayer graphene
  6. Multilayer and alternating-twist graphene
  7. Twisted WSe2 and transition-metal dichalcogenide moiré systems
  8. Rhombohedral multilayer graphene without a moiré
  9. Superfluid stiffness and quantum geometry
  10. Quantitative benchmarks
  11. Open problems and active debates
  12. Major programs and players
  13. Outlook: what to watch (next 12-18 months)
  14. Key papers
  15. Glossary

Sample findings

  • Superconductivity was reported in magic-angle twisted bilayer graphene near a twist angle of about 1.1 degrees, with zero-resistance states up to a critical temperature of 1.7 K at carrier densities of order 10^11 cm^-2.
  • Superconductivity up to 3 K was reported close to filling factor -2 in magic-angle bilayer graphene, together with further superconducting domes near filling 0 and plus or minus 1 and states with non-zero Chern numbers.
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