{"paper":{"title":"Nagaoka supermetal in the particle-doped triangular Hubbard model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Particle doping of the triangular Hubbard model produces a Nagaoka supermetal marked by sublinear resistivity.","cross_cats":["cond-mat.str-el","quant-ph"],"primary_cat":"cond-mat.quant-gas","authors_text":"Hui Tan, Jianmin Yuan, Jian-Shu Xu, Rui Cao, Xiangyue Zhang, Yongqiang Li, Yuan-Yao He","submitted_at":"2026-05-13T17:58:13Z","abstract_excerpt":"While the interplay of correlations and geometric frustration in doped Mott insulators provides a fertile ground for exotic quantum phases, the nature of the metallic state emerging upon particle doping remains poorly understood. In this work, we investigate the triangular-lattice Hubbard model with particle doping and provide compelling evidence for an intrinsic, interaction-driven quantum state, which we term the Nagaoka supermetal. This state is characterized by a sublinear temperature dependence in the DC resistivity, along with singular behaviors in the charge compressibility and zero-fre"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"we provide compelling evidence for an intrinsic, interaction-driven quantum state, which we term the Nagaoka supermetal. This state is characterized by a sublinear temperature dependence in the DC resistivity, along with singular behaviors in the charge compressibility and zero-frequency spectral weight.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the singular transport and thermodynamic properties are fully captured by the higher-order Van Hove singularity in the derived effective low-energy model, without dominant contributions from other many-body effects, numerical artifacts, or unaccounted interaction terms.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Particle doping of the triangular Hubbard model yields a Nagaoka supermetal whose anomalous transport and thermodynamic properties arise from a power-law divergent density of states at a higher-order Van Hove singularity.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Particle doping of the triangular Hubbard model produces a Nagaoka supermetal marked by sublinear resistivity.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"f0efe907f44358a9b3d9ec6ca135e91b73cdc1cf546eb9515c25779101bf9f24"},"source":{"id":"2605.13837","kind":"arxiv","version":1},"verdict":{"id":"887e0f28-52dd-44f2-bfa3-3eee058552c6","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T17:30:52.024009Z","strongest_claim":"we provide compelling evidence for an intrinsic, interaction-driven quantum state, which we term the Nagaoka supermetal. This state is characterized by a sublinear temperature dependence in the DC resistivity, along with singular behaviors in the charge compressibility and zero-frequency spectral weight.","one_line_summary":"Particle doping of the triangular Hubbard model yields a Nagaoka supermetal whose anomalous transport and thermodynamic properties arise from a power-law divergent density of states at a higher-order Van Hove singularity.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the singular transport and thermodynamic properties are fully captured by the higher-order Van Hove singularity in the derived effective low-energy model, without dominant contributions from other many-body effects, numerical artifacts, or unaccounted interaction terms.","pith_extraction_headline":"Particle doping of the triangular Hubbard model produces a Nagaoka supermetal marked by sublinear resistivity."},"references":{"count":95,"sample":[{"doi":"","year":2022,"title":"M. Qin, T. Sch¨ afer, S. Andergassen, P. Corboz, and E. Gull, The hubbard model: A computational perspec- tive, Annual Review of Condensed Matter Physics13, 275 (2022)","work_id":"fe7344d0-d01a-4943-9a00-468aeb12301f","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"D. P. Arovas, E. Berg, S. A. Kivelson, and S. Raghu, The Hubbard model, Annual Review of Condensed Matter Physics13, 239 (2022)","work_id":"d7c9b105-ccbf-44c4-a28b-d424934de82a","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2019,"title":"E. W. Huang, R. Sheppard, B. Moritz, and T. P. Dev- ereaux, Strange metallicity in the doped hubbard model, Science366, 987 (2019)","work_id":"8753655b-f2ad-4ddb-9698-fecb47e8ab3e","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"W. W´ u, X. Wang, and A.-M. Tremblay, Non-fermi liq- uid phase and linear-in-temperature scattering rate in overdoped two-dimensional hubbard model, Proceedings of the National Academy of Sciences119,","work_id":"877dca68-25d0-4a49-8072-0290d11af1d3","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2003,"title":"O. Gunnarsson, M. Calandra, and J. E. Han, Colloquium: Saturation of electrical resistivity, Rev. Mod. Phys.75, 1085 (2003)","work_id":"fabcd8b9-307c-4676-95c6-af2bf0d94879","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":95,"snapshot_sha256":"69bce49840161ac40056f7a514365d29a894b0d114ed07bbf9fe0d90add7e614","internal_anchors":1},"formal_canon":{"evidence_count":2,"snapshot_sha256":"1bff585cf5cde546be410a78c1ac0d2648eded6983cc2c2ea208cd27a3c32416"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}