{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"718dd23e1a9faf474bc188a60bc11c97130bb651ad0fd5e2a679ac934c78f74c","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["29f3d60c8bdad9401bb25c10bac6df31aa5f73e058139e8370c2e3888b2ec22e","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"89e39a49beb85664be7cea5049283347b57486494ac63c7f7a73d3cd37983c15","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"cm.twisted-tmd.zero-field-cfl","kind":"well-posed","literature_status":"partially-resolved","n":"2","parents":[],"plain":"At half filling of the lowest twisted-MoTe2 band, theory predicts a metal of composite fermions (electrons bound to vortices) like the one in a half-filled Landau level, but with no applied field.","posed_since":"2023","precise":"In twisted bilayer $\\mathrm{MoTe_2}$ at $\\theta \\sim 3.5-3.9\\,\\mathrm{deg}$ near hole filling $\\nu = 1/2$ and $3/4$ of the first Chern band, determine whether the compressible state is an anomalous composite Fermi liquid with Fermi wavevector $k_F = \\sqrt{4 \\pi n_{cf}}$, $n_{cf}$ the composite-fermion density, or an ordinary Fermi liquid with Berry curvature. An answer is a direct measurement of the composite-fermion Fermi surface.","problem_ref":"29f3d60c8bdad9401bb25c10bac6df31aa5f73e058139e8370c2e3888b2ec22e","references":"","settled_by":"Commensurability oscillations in an imposed periodic potential, or surface-acoustic-wave resonances, showing $k_{F}$ fixed by the composite-fermion density.","status_note":"2023-2024 transport found anomalous Hall resistance near $2h/e^{2}$ at $\\nu = 1/2$, consistent with a composite Fermi liquid; no direct Fermi-surface measurement as of 2026.","title":"Composite Fermi liquid at half filling without magnetic field","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"a795f01718898c89d863dd79a2a367e3ca24ffe666327953d0492edda80bec8b","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"95871ea9dd31769a1a2c6efb75d6ea8f9bf658849244e7742707eca7f02456c6","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"wzOEJrsS_EO4Vw5EYZerubzQ4JGtPNvxNYcZzyivdiS6cNjZt8IU4dfDkCIA7f_VU_p0vH0DKHeE2dhyrZwsCg"},"schema":"pubphys.envelope/1"},"record_hash":"a795f01718898c89d863dd79a2a367e3ca24ffe666327953d0492edda80bec8b","leaf_index":3090}