Mechanism of superconductivity in twisted bilayer WSe_2 · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title · changed
Revision 1: Mechanism of superconductivity in twisted bilayer WSe2
Revision 2: Mechanism of superconductivity in twisted bilayer $\mathrm{WSe_2}$
Plain · changed
Revision 1: Twisted WSe2 superconducts at twist angles near 3.65 and 5 degrees, next to insulating or possibly magnetic states, and the attraction that pairs its electrons is unknown.
Revision 2: Twisted $\mathrm{WSe_2}$ superconducts at twist angles near 3.65 and 5 degrees, next to insulating or possibly magnetic states, and the attraction that pairs its electrons is unknown.
Precise · changed · core
Revision 1: In twisted bilayer WSe2 at $\theta \sim 3.65\,\mathrm{deg}$ and $\sim 5\,\mathrm{deg}$, superconductivity with $T_c$ of a few hundred mK appears near half filling of the top moire band under displacement field, adjacent to a correlated insulator or metal with possible antiferromagnetic order. Determine the pairing interaction (spin fluctuations of a triangular-lattice Hubbard model, valley fluctuations, phonons) and the gap symmetry. An answer reproduces $T_c$ versus displacement field and filling from a microscopic model.
Revision 2: In twisted bilayer $\mathrm{WSe_2}$ at $\theta \sim 3.65\,\mathrm{deg}$ and $\sim 5\,\mathrm{deg}$, superconductivity with $T_c$ of a few hundred mK appears near half filling of the top moire band under displacement field, adjacent to a correlated insulator or metal with possible antiferromagnetic order. Determine the pairing interaction (spin fluctuations of a triangular-lattice Hubbard model, valley fluctuations, phonons) and the gap symmetry. An answer reproduces $T_c$ versus displacement field and filling from a microscopic model.
Settled by
A gap-symmetry measurement plus identification of the adjacent ordered state, and a calculation reproducing the superconducting dome.
Kind
phenomenon
Answer type
mechanism
References
(empty)
Literature status
open
Status note · changed
Revision 1: Reported in 2024-2025 by Cornell (3.65 deg) and Columbia (5.0 deg) groups; a 2026 preprint reports superconductivity in twisted trilayer WSe2 (arXiv:2606.11495).
Revision 2: Reported in 2024-2025 by Cornell (3.65 deg) and Columbia (5.0 deg) groups; a 2026 preprint reports superconductivity in twisted trilayer $\mathrm{WSe_2}$ (arXiv:2606.11495).
Posed since
2024

Decisions