{"schema":"pubphys.bundle/1","record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"6bb2190de3533b366f314a76b4b3ad890bee5d141c1e44fc1d4b4970620cf030","created":"2026-10-03T07:18:00Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["1f601410322cdcfe00cccad7c945bff94b200a5feac304a2341ddec819eedea6","5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"97a4ad85dbf1a0b4ee37c2647dccfe9d46b5ac48fbe9cba10120ae61a8920d01","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"classification","assisted_by":[],"external_id":"cm.moire-tmd-hubbard.kondo-breakdown","kind":"well-posed","literature_status":"open","n":"1","parents":[{"note":"Moire Kondo lattice is a gate-tunable instance of heavy-fermion Kondo breakdown","parent_revision":"1f601410322cdcfe00cccad7c945bff94b200a5feac304a2341ddec819eedea6","relation":"special_case"}],"plain":"In MoTe2/WSe2 one layer can hold fixed local magnetic moments while the other carries mobile electrons, and the two combine into a heavy-electron metal (a Kondo lattice); how this metal breaks apart when the coupling between layers is weakened is unknown.","posed_since":"2023","precise":"In MoTe2/WSe2 heterobilayers with the MoTe2 moire band at filling $\\nu_f = 1$ (local moments) and the WSe2 band doped to density $n_c$ per moire cell, Zhao et al. (Nature, 2023, arXiv:2211.00263) reported a heavy Fermi liquid with a large Fermi surface and gate-tunable Kondo temperature, destroyed by magnetic field. Determine whether reducing the Kondo coupling by displacement field or field produces a Kondo-breakdown transition at which the Fermi-surface volume jumps from $\\nu_f + n_c$ to $n_c$ per moire cell, whether it is continuous, and whether it coincides with magnetic order of the moments. An answer is the Hall number and quasiparticle mass across the transition at $T \\to 0$ and the magnetic state on each side.","problem_ref":null,"references":"","settled_by":"Hall-number and quantum-oscillation measurements across the tuned transition at the lowest temperatures, with magnetic circular dichroism tracking the order of the local moments.","status_note":"Heavy fermions and their field-induced destruction were reported in 2023; the order of the breakdown transition and its relation to moment ordering are not established as of 2026, to this survey's knowledge.","title":"Kondo breakdown transition in a gate-tuned moire Kondo 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