{"schema":"pubphys.bundle/1","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"},"content_withheld":"false","files":[],"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"4fb3eff42ed30f617a718777d526b5b5b857a78e92bdd6d3838e2e94fc937ae3","schema":"pubphys.attested/1"},"id_token":null,"id_token_withheld":"false","envelope":{"attested_hash":"b563c678bfab753d25ca77320a0a13dc9461659809e48447b79c7a192d8dd995","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"5ONjq48ohnyOl1Ik84XU-DJ0AuegxOP7Q8Zv-8FuIg2re1W3lJ9fjYrKBfe_FGvMp8yREjZb-swWGskV8yS4BA"},"schema":"pubphys.envelope/1"},"ots":{"attested":["AE9wZW5UaW1lc3RhbXBzAABQcm9vZgC_ieLohOiSlAEItWPGeL-rdT0lyncyCgoT3JRhZZgJ5IRHt5x6GS2N2ZXwILV-qtlIy4PYcVo0Rt_zDjfhg9llg9A9yi2lMo2fjtmuCPAgLElJwewCNlCtvtWj0SqX1ROiIwzsk_HT0uvDYLFU39oI8SACMNJjaIa9r1s4dOsqAUztM6xcAC3MXcRcItMrC6yQwQjxIB9DDgd57kp1CJUYF-1cdsXUELBxpePM4Kxu3aK9dzuKCPAgaaKnY4tLIKX7Amwj0BGCzNk0uQbtxP_VHg7Yx2h-l0UI8SBE9JBSeaxZ_ym70s6DMr6dtIgZGwis9uV00YisuztiwQjwICiraB_7UgXCeuS2UG4RwGVUB0TTDW9SPZX6Cm6ovyuOCPEg4rqGLBuUkm_3jUcKp88ZZh3m3UlQLzvNY7ka68qj80wI8SCDmR0G6GV1bT7GyRXBqEjvzcE3qRopJxP_SHiWmwBlpQjxIFf8EhaVa-ubjpYx3wEAcKGxkzfUQq6B-8jimpRd8IqnCPAgy6DmLQtIuWm-zrDRmaSy95vcFWsjvWyppQO7wIWrfC4I8SAQuuTPkAGyvS_wKMy9BtKvnki2puESdY2vXem8hT1uIQjwIBGYo5Vxy-d7U5zKv5vp3Ii7hJPH_BDLCzA13c47p9q7CP_wCHbghVgOFMuNCPAQPZK2lHbTMqcCYUotzOQcmQjwIJ7ruRIs6HnufKxCpmLUgeUl0aUu0ov4_3PqcppS-bddCPEgI530vHzdwz_3o9jYQ3WablSaV64Wfn7Pmby5WLyI-A0I8QRqwKw78AhITF7Tr3a1xP8Ag9_jDS75DI4sK2h0dHBzOi8vYm9iLmJ0Yy5jYWxlbmRhci5vcGVudGltZXN0YW1wcy5vcmcI8CBXWeNiWFWltfHE0nkDXsVKIykUUwuObhsnN-2fvBt98gjwIM5Vf7j68sOFgVysYMc5S09Hho-fqxYW3oQ4oKUX7JpPCPAgaKHHQB3sdd9w1hu4NMh7vmb-p0X2r4uyVKKCj1G7S28I8SAW2Mg6Bzi9ygjrrjIYB7w90fwMcxH24SsqLmzPyAMGfwjwIMQ863zlveYIpNKWVrZaDOa4vowwoOg2CcTW8gXtxK3dCPEgrZxGGAf-t8jhz_eLMUyBN1IhNrdYDRcNHWvQcwNG9woI8CCVOUHG1YXudbaFIgUYvrCIevRWvb2ubhQAo-z0duD0rQjxIDBeKerVGkO3J2eXDwdraSioXbIWsdIPEN1s8pIwJIS2CPAgV2kB3n3JZ5HwBQjpRL1CWKnqvdCjZk3RcALk6N2wHigI8CB-wbljNlfqElD25uZkNg6taS81YDRU2vfMqGVQ420O9AjxWQEAAAABJM43UU6MLMRrPlCUqossvu1q_knons5yylyWTgxZzWUAAAAAAP7___8CLgABAAAAAAAWABQrYt3E7OllKRCEmL3FL589l78_5wAAAAAAAAAAImog8ATiyw4ACAjxILmbcIO7ixv3pCtwUMZ1VQGKus54F9lZ8-w5ECD5ZuiICAjwIG6ynCyFTLPE7Rgk-0ZGCtBDyqNQx8YvaSZNHy8D8p8jCAjwIMX8zoD2Be1YWvcx_bexVPRmBX0hK-do8b8t9SarimQVCAjxIG6XtpqIEclLlhzcK1LVjqoPGrjjmLnyno8tcETMzECECAjwIF6mlfXOFY51JhrK4eze8zQlKV75OYZYqbtyi8BWxmAsCAjwIKKUcJmVoz-u-geiRV_-ZHdF0VEPXaEPFWf_JX_0e7G2CAjxIGMeD0Z5QWNKBcAEpHht007FFIILW6aSJ8f3CMkKNsneCAjwIBFr6Je8rkB7kwhPGbq0yRgFwZsvW9JhY5sXDRtrq0QwCAjwIAHAwXaus-yUgKICJB5mVvx8VZuJgjwnpb0qWPg1pi6DCAjxIAJhb8cefkVHTAMymdsxa-_i-tUua62LcpALQnPG7R9_CAjwIDvsFqBhPfAL6TCtXZd7gBWmMpx6iiZ-Ug0Jf_LlcstgCAjwIDJRBX6Q0Vge-ra-k1_g76yJWTEp6WWF13I3JpTnsZPJCAjwILykZCbkC9VQgl5gytPKKir6T9nTvKR6y05iWSHBTQgzCAgABYiWDXPXGQED45c78Ah-sGbmQAwfZwjwEAYqxtHnZiPZnJEGPx_JvKsI8SDXkqDg17YsZIrEz5acRx7mBXCKW5mKNgRYnw_-U2cpDgjxBGrArDrwCEfK6Mono428_wCD3-MNLvkMji4taHR0cHM6Ly9hbGljZS5idGMuY2FsZW5kYXIub3BlbnRpbWVzdGFtcHMub3JnCPAg10nyJ6Jn4kshQQQCKE0Lvj3hBC6nLRBVIzaPV4eh8VwI8CCQaAqWlxEbac_XOq1MOlf9iOKHEsxXspzbjK0vLpy8BwjwII3iRbRXUcDxrhAdkZmFlI15nySCSEZ7g922tF1Xln5DCPEgYYvZ1L4v4rPu_UqLfcHPtwSb2OH2GhPgVcVhhH6DpkQI8CDZCIoR20sC-uchP40oAmcLm9EJFV7xzwplj54AeVadXQjxILvLBjPFpCoz29m9Yf2qRnV7PI9GqxE8ozVQfk9QwCqrCPEgZXcMudvEoB_MJ8tqOW2PLTKAIeQBnE-1bfzptRc2gR8I8VkBAAAAAfXq-bmxWqOz7B5wKkwjzHGv2R4s7Y0Z76LqXWYNhmz0AAAAAAD-____Av0cAAAAAAAAFgAUl-skmdZDtn7Hnub6mF4HP2uVn7oAAAAAAAAAACJqIPAE4MsOAAgI8CBDmQsbEXc46Hu8DivhCBM1LGExa4TTM-wo7HpoCVjBTQgI8CCty5vkQtPHzzs8xqArOYhVSjgaDoG1ou3cojv5_P7wQQgI8SDQWB0kdXCTwbk-TqTt0QfRMyzDNLOtU1XXFgvGSRlW8wgI8CC2PKa_QCIBZtrXodq1GdEzppISMsMRDOnzr2gFjLKOAAgI8CCwQ_QF67bcFk_uJ2s0VCZmf5PGIjTmTCpt_qnVY5p_8AgI8SAbzyx7z-oxPMju6PvtQhzrJIQyH2ZAc9oyLuYemzbmZQgI8CC5bh7J74uUk91r8LwybHQFCNBC3PWeuwtMCCNFKWj19AgI8SAf4R2TUNPjaX_PWDUImpoITK0JoW89zaMKnD1wlEEi8AgI8SC2vNmdm7eyP5Ytl1yTzT0njliMdALl1ViKG-s3bG2zswgI8CCpbIVNz1GFVXdJk2zd82hBUoNFFemUPBt7IJdWEOciPwgI8CBtYdRQcrtX1FtCm1SxF7sx-5cO04U8KzbJh8fqBkyReAgI8CBHs2LGmX6gI-lV7yp1RrV7_tGfdiBAwnEFF6B6yXHzAQgI8CATotVmbXBMAixhZ-QKy5Q4lR0FusdA_wcIC1TbB7GmxAgIAAWIlg1z1xkBA-KXOw"],"envelope":["AE9wZW5UaW1lc3RhbXBzAABQcm9vZgC_ieLohOiSlAEI-pwvhehw3L2NNt7U13km6buRMEFy0Oe4WIIo_VQGU2nxIPpwn1sAj5uwDg0E4fBPZyDTr4QxvLwJHXxaVlgytHIRCPAgHakeFpIBbwO_4-MqS_f6Kev5NBMUSGXnPP18Cy1Mkw4I8CCBLp7rXCoImEJWn3EDwns_Xf8bhVNfgfqDN8Yv-vvCwAjxICrgkPSUpbppry_lsypQi_SaSQ1dJi6-o_y3rDq1qx3hCPEgLPNWjnHmQwnuoXJrrS50nX9si6V2nY55g55KCF1Gaz8I8SAYagZTEwCVlMgXqQhOihWFZYtRA7vimmk7YupjYdRxTgjwII1OGo6m_8GpiiXK1pC7312jTWia9PNuWF9nWxoSLBVxCPAgwaB6v5-rgNtbRovqByHYFx5vLPaMlAE1dmQXdsyW6UQI8SDWlL7IzfO_cwYxfadaDmoPVp0tptPmw2XmYaU4JMe_wgj_8Ah24IVYDhTLjQjwED2StpR20zKnAmFKLczkHJkI8CCe67kSLOh57nysQqZi1IHlJdGlLtKL-P9z6nKaUvm3XQjxICOd9Lx83cM_96PY2EN1mm5UmleuFn5-z5m8uVi8iPgNCPEEasCsO_AISExe0692tcT_AIPf4w0u-QyOLCtodHRwczovL2JvYi5idGMuY2FsZW5kYXIub3BlbnRpbWVzdGFtcHMub3JnCPAgV1njYlhVpbXxxNJ5A17FSiMpFFMLjm4bJzftn7wbffII8CDOVX-4-vLDhYFcrGDHOUtPR4aPn6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