ESPCI web site
November 21 at 3:00 pm (Paris time) !Unusual date and time !
Room Charpak, entrance building, ground floor
Magnetic, metal-insulator and superconducting transitions in Moire transition metal dicalcogenides
One unit cell thick layers of materials such as WSe2 may be stacked one on top of the other at a small relative twist angle, creating a Moiré pattern characterized by a large unit cell. The resulting electronic structure is characterized by a nontrivial quantum geometry, interaction strength set by device configuration, and in-situ tunable electron density and band theory. The systems exhibit metallic, superconducting, Fermi surface reconstructed (likely antiferromagnetic), and insulating phases. The unprecedented tunabilty allows a systematic experiment-theory comparison, enabling insights into the Mott transition, electronically mediated superconductivity and fundamental questions of transport in interacting electron systems. This talk reportswill summarize recent experimental and theoretical work related to these questions.
Nature 637, 839-845 (2025), PRR 6 033127 (2024), arXiv:2408.16075, arXiv:2412.14296, arXiv:2503.11763 arXiv:2506.22325 and to appear
