{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"425de7380816ec1402899275f678f89c77c7193ff5ea2339fd24fecf71dfb850","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"cfe2dfef889edde225c82dd73c93dfbf8f402937915c4858d89529eb7d15f64f","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":"1","parents":[],"plain":"In MoTe2/WSe2 and in twisted WSe2, 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 MoTe2/WSe2 heterobilayers (Li et al., Nature, 2021, arXiv:2103.09779) and twisted bilayer WSe2 (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":null,"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":"c8c40cb151cde7a9b6935b4a394afff60af061353161a9f02c560677ef0488fa"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"ad6ccf02a9cb537a30d700dae24da59f5b1261e17a00ea32ed0b686b6ef3e786","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"1833ec02d123abe3c90d5c8eeeb26fa8abca36865ecfee66a4e182997dc8634b","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"XR2NFFfpiLuosbR9MuWcyTl4bnzqalMYuoAKk6Q87zLGUMLBeq14AN75d3I1yWDHZU5RlJOl7i3LSTrTvf9UDQ"},"schema":"pubphys.envelope/1"},"record_hash":"ad6ccf02a9cb537a30d700dae24da59f5b1261e17a00ea32ed0b686b6ef3e786","leaf_index":1100}