{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"0bba12fba9ca727ce4ed15f6c3898c2b61011c6eeefeb5865186375119dffc9c","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011","8b9193cd375011e2c1597af9a2c658adfc645084080828b1296d7c4c575ec6d7"],"salt":"28e1507a7bf7109b101b5ce5a564393dffd451f736c0769390b1c5b0ee06be66","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"identification","assisted_by":[],"external_id":"cm.insulator-quantum-oscillations.wte2-insulating-landau","kind":"well-posed","literature_status":"open","n":"1","parents":[{"note":"","parent_revision":"8b9193cd375011e2c1597af9a2c658adfc645084080828b1296d7c4c575ec6d7","relation":"special_case"}],"plain":"Monolayer WTe2, an insulator in its interior, shows resistance oscillations starting at a weak magnetic field, as if it contained very mobile particles. What these particles are is unknown.","posed_since":"2021","precise":"In gated monolayer WTe2 near charge neutrality, where the bulk is insulating (a 2D topological insulator, also proposed as an excitonic insulator), resistance oscillates periodically in $1/B$ from an onset of $\\sim 5e3\\,\\mathrm{G}$ (Wang et al. 2021), and thermopower oscillates with sign changes (2024). Identify the mobile fermions responsible (neutral fermions, excitons, or charged carriers of a hidden Fermi surface) and explain why oscillations appear while the bulk resistance stays large.","problem_ref":null,"references":"","settled_by":"Simultaneous thermodynamic (capacitance, magnetization) and transport oscillation measurements versus gate density, with local probes showing whether a Fermi surface of charged carriers is present.","status_note":"Sign-alternating thermopower oscillations in the insulating state were reported in 2024 (Tang et al., arXiv 2405.09665).","title":"What carries Landau quantization in insulating monolayer WTe2?","topic_ref":"eeb05b44f8dd47811bcc41ccf7d60e299af30b8c5bed6ef76c910d60049cf726"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"4fb3eff42ed30f617a718777d526b5b5b857a78e92bdd6d3838e2e94fc937ae3","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"b563c678bfab753d25ca77320a0a13dc9461659809e48447b79c7a192d8dd995","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"5ONjq48ohnyOl1Ik84XU-DJ0AuegxOP7Q8Zv-8FuIg2re1W3lJ9fjYrKBfe_FGvMp8yREjZb-swWGskV8yS4BA"},"schema":"pubphys.envelope/1"},"record_hash":"4fb3eff42ed30f617a718777d526b5b5b857a78e92bdd6d3838e2e94fc937ae3","leaf_index":1038}