{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"1311a2c044193c712d448bb2a876f9b836bbf4ea46419a3ef8367485c489a9d2","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["ad6ccf02a9cb537a30d700dae24da59f5b1261e17a00ea32ed0b686b6ef3e786","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"88a56dafceb4c491a1a6b87977f052e1ac126dd6092731e95c077ae00790459d","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"identification","assisted_by":[],"external_id":"cm.moire-tmd-hubbard.continuous-mott","kind":"phenomenon","literature_status":"contested","n":"2","parents":[],"plain":"In $\\mathrm{MoTe_2}$/$\\mathrm{WSe_2}$ and in twisted $\\mathrm{WSe_2}$, the insulator with one electron per moire site turns into a metal as an electric field widens the band, and the change looks continuous, which standard theory does not expect for this kind of transition.","posed_since":"2021","precise":"In $\\mathrm{MoTe_2}$/$\\mathrm{WSe_2}$ heterobilayers (Li et al., Nature, 2021, arXiv:2103.09779) and twisted bilayer $\\mathrm{WSe_2}$ (Ghiotto et al., Nature, 2021) at filling $\\nu = 1$ (one hole per moire site of a triangular lattice), tuning the displacement field drives a metal-insulator transition at which the charge gap closes continuously and $\\rho(T)$ shows quantum-critical scaling. Determine whether this is a continuous Mott transition from a Fermi liquid to a spin liquid with a spinon Fermi surface, a transition into a magnetically ordered insulator, or a disorder-broadened first-order transition. An answer specifies the insulating state, the critical exponents, and the behaviour of the effective mass and spin susceptibility at the critical point.","problem_ref":"ad6ccf02a9cb537a30d700dae24da59f5b1261e17a00ea32ed0b686b6ef3e786","references":"","settled_by":"Thermodynamic measurement of electronic specific heat or spin susceptibility across the transition, together with optical or tunnelling measurement of the charge gap, showing whether a gapless spin sector survives in the insulator.","status_note":"Both 2021 experiments reported continuous transitions; explanations based on spinon Fermi surfaces, magnetic order and disorder all remain in use as of 2026, to this survey's knowledge.","title":"Nature of the bandwidth-tuned Mott transition in moire semiconductors","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"3657623d8684738c88e4ca3ba3ac66d06b71a54a635145145d3126bbdfb20451","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"82d695e3c009366c579b4b39812a031d2fecd092c844276c6c2cf61d4fb78606","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"S1sU8rd8JRbEM-SRiVOXQany7kp8e9hJkPpcBZ6iUE1Y23bO5jbso4_nUfVWpbPRf4uvm4pk4Y9sHuNk9nsGCg"},"schema":"pubphys.envelope/1"},"record_hash":"3657623d8684738c88e4ca3ba3ac66d06b71a54a635145145d3126bbdfb20451","leaf_index":2952}