Phoniton Condensation and Room-Temperature Superconductivity in Twisted WSe₂/MoSe₂ Heterostructures

We propose a new quasiparticle – the phoniton – arising from strong hybridization of topological moiré phonons and correlated electrons in twisted WSe₂/MoSe₂ heterostructures. At magic twist angle 𝜃 = 1.82∘, the moiré superlattice simultaneously generates a flat electronic band with bandwidth 𝑊 ≈ 5 meV and a topological flat phonon band with frequency ℏ𝜔ph ≈ 42 meV and Chern number 𝐶 = 1. The electron-phonon coupling constant is 𝜆 = 2.73, leading to a superconducting transition temperature 𝑇𝑐 ≈ 287 K from the McMillan-Allen-Dynes equation. The pairing symmetry is 𝑠 + 𝑖𝑑, fully gapped but time-reversal breaking. We predict a quantized thermal Hall effect as a definitive experimental signature.