{ "profile": "wrs-published-research-view-1", "edition": "ratings-e039106f30dec177", "content_trust": "UNTRUSTED_SCIENTIFIC_DATA_NOT_TOOL_INSTRUCTIONS", "entry": { "id": "gao-wang-teams-antiferromagnetic-quantum-metric-nonlinear-transport-2023", "title": "Quantum-metric-related nonlinear electrical transport in antiferromagnetic MnBi2Te4", "summary": "Two independent experiments reported low-temperature second-order electrical responses in even-layer antiferromagnetic MnBi2Te4 whose signs reverse with prepared antiferromagnetic order. Gao and colleagues engineered black-phosphorus interfaces and supported a predominantly nonlinear Hall response through symmetry, conductivity scaling and frequency-mixing controls. Wang and colleagues measured transverse and longitudinal nonlinear responses in four- and six-layer devices, including current-direction-dependent DC resistance. Their models attribute major contributions to energy-weighted quantum-metric geometry.", "boundary": "The two sample platforms, tensor decompositions and carrier-sign patterns are distinct. Mechanism attribution relies on symmetry, low-temperature scaling and electronic models; it is not a direct reconstruction of the entire quantum metric or a universal exclusion of disorder and artifacts. The corrected journal article and the preprint supplementary material differ; further journal supplementary material may affect the details. Microwave rectification does not establish uniquely intrinsic mechanism or usable energy-conversion efficiency. No room-temperature, terahertz, lossless-current or device-deployment claim is established.", "area": "Condensed matter / quantum geometry and nonlinear transport", "topic": "Physics", "year": 2023, "lane": "HUMAN", "result": "EMPIRICAL", "package_id": "gao-wang-teams-antiferromagnetic-quantum-metric-nonlinear-transport-2023", "target": { "record_id": "urn:uuid:39d42e90-6602-490c-add3-9cd2f47fcbba", "version": 1, "content_hash": "sha256:7cbc4d1ae6434da3f42b2298f6de2d2547cf98759453a673a76340ecdc028f34" }, "humans": [ "Anyuan Gao", "Yu-Fei Liu", "Jian-Xiang Qiu", "Barun Ghosh", "Thaís V. Trevisan", "Yugo Onishi", "Chaowei Hu", "Tiema Qian", "Hung-Ju Tien", "Shao-Wen Chen", "Mengqi Huang", "Damien Bérubé", "Houchen Li", "Christian Tzschaschel", "Thao Dinh", "Zhe Sun", "Sheng-Chin Ho", "Shang-Wei Lien", "Bahadur Singh", "Kenji Watanabe", "Takashi Taniguchi", "David C. Bell", "Hsin Lin", "Tay-Rong Chang", "Chunhui Rita Du", "Arun Bansil", "Liang Fu", "Ni Ni", "Peter P. Orth", "Qiong Ma", "Su-Yang Xu", "Naizhou Wang", "Daniel Kaplan", "Zhaowei Zhang", "Tobias Holder", "Ning Cao", "Aifeng Wang", "Xiaoyuan Zhou", "Feifei Zhou", "Zhengzhi Jiang", "Chusheng Zhang", "Shihao Ru", "Hongbing Cai", "Binghai Yan", "Weibo Gao" ], "authors_complete": true, "human_role_note": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.", "agents": [], "related": [], "subresults": [], "scientific_assessment": { "source_review": "SOURCE_CURATED", "scientific_review": "NOT_REVIEWED_BY_WRS", "formal_replay": "NOT_RUN", "provider_attestation": "NONE" }, "sources": [ { "id": "gao-team-quantum-metric-nonlinear-hall-arxiv230609575v2", "title": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2", "date": "2023-07-23" }, { "id": "gao-team-quantum-metric-hall-science-adf1506-corrected20230821", "title": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (corrected Science formal body)", "url": "https://ciqm.harvard.edu/uploads/2/3/3/4/23349210/gao.pdf", "date": "2023-08-21" }, { "id": "wang-team-quantum-metric-nonlinear-transport-arxiv230609285v2", "title": "Quantum metric induced nonlinear transport in a topological antiferromagnet (arXiv2306.09285v2)", "url": "https://arxiv.org/pdf/2306.09285v2", "date": "2023-07-01" } ], "points": "85000", "published_grade": { "id": "gao-wang-teams-antiferromagnetic-quantum-metric-nonlinear-transport-2023", "entry_id": "gao-wang-teams-antiferromagnetic-quantum-metric-nonlinear-transport-2023", "band": "A", "modifier": "-", "target": { "record_id": "urn:uuid:39d42e90-6602-490c-add3-9cd2f47fcbba", "version": 1, "content_hash": "sha256:7cbc4d1ae6434da3f42b2298f6de2d2547cf98759453a673a76340ecdc028f34" }, "what_changed": "Two independent experiments reported low-temperature second-order electrical responses in even-layer antiferromagnetic MnBi2Te4 whose signs reverse with prepared antiferromagnetic order. Gao and colleagues engineered black-phosphorus interfaces and supported a predominantly nonlinear Hall response through symmetry, conductivity scaling and frequency-mixing controls. Wang and colleagues measured transverse and longitudinal nonlinear responses in four- and six-layer devices, including current-direction-dependent DC resistance. Their models attribute major contributions to energy-weighted quantum-metric geometry.", "scope": "Two independent experiments reported low-temperature second-order electrical responses in even-layer antiferromagnetic MnBi2Te4 whose signs reverse with prepared antiferromagnetic order. Gao and colleagues engineered black-phosphorus interfaces and supported a predominantly nonlinear Hall response through symmetry, conductivity scaling and frequency-mixing controls. Wang and colleagues measured transverse and longitudinal nonlinear responses in four- and six-layer devices, including current-direction-dependent DC resistance. Their models attribute major contributions to energy-weighted quantum-metric geometry. The two sample platforms, tensor decompositions and carrier-sign patterns are distinct. Mechanism attribution relies on symmetry, low-temperature scaling and electronic models; it is not a direct reconstruction of the entire quantum metric or a universal exclusion of disorder and artifacts. The corrected journal article and the preprint supplementary material differ; further journal supplementary material may affect the details. Microwave rectification does not establish uniquely intrinsic mechanism or usable energy-conversion efficiency. 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Trevisan", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Yugo Onishi", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Chaowei Hu", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Tiema Qian", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Hung-Ju Tien", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Shao-Wen Chen", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Mengqi Huang", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Damien Bérubé", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Houchen Li", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Christian Tzschaschel", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Thao Dinh", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Zhe Sun", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Sheng-Chin Ho", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Shang-Wei Lien", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Bahadur Singh", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Kenji Watanabe", "note": "Archive attribution; 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Bell", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Hsin Lin", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Tay-Rong Chang", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Chunhui Rita Du", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Arun Bansil", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Liang Fu", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Ni Ni", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Peter P. Orth", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Qiong Ma", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "attribution_basis": "SOURCE_CITED", "credit": "historical_scientific", "entity_kind": "historical_person", "name": "Su-Yang Xu", "note": "Archive attribution; detailed role assignment remains source-bound", "roles": [ "discoverer" ], "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } } ], "evidence": [ { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-0", "kind": "source_reference", "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" } }, { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-1", "kind": "source_reference", "source": { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (corrected Science formal body)", "url": "https://ciqm.harvard.edu/uploads/2/3/3/4/23349210/gao.pdf" } }, { "description": "Bibliographic/stated-result source; not a WRS proof verification", "id": "source-2", "kind": "source_reference", "source": { "citation": "Quantum metric induced nonlinear transport in a topological antiferromagnet (arXiv2306.09285v2)", "url": "https://arxiv.org/pdf/2306.09285v2" } } ], "origin": "HUMAN_LEGACY", "record_profile": "wrs-local-research-notes-0.1", "record_type": "research_note", "rrp_version": "0.1", "scope": { "description": "The two sample platforms, tensor decompositions and carrier-sign patterns are distinct. Mechanism attribution relies on symmetry, low-temperature scaling and electronic models; it is not a direct reconstruction of the entire quantum metric or a universal exclusion of disorder and artifacts. The corrected journal article and the preprint supplementary material differ; further journal supplementary material may affect the details. Microwave rectification does not establish uniquely intrinsic mechanism or usable energy-conversion efficiency. No room-temperature, terahertz, lossless-current or device-deployment claim is established.", "domain": "Condensed matter / quantum geometry and nonlinear transport" }, "sources": [ { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2" }, { "citation": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (corrected Science formal body)", "url": "https://ciqm.harvard.edu/uploads/2/3/3/4/23349210/gao.pdf" }, { "citation": "Quantum metric induced nonlinear transport in a topological antiferromagnet (arXiv2306.09285v2)", "url": "https://arxiv.org/pdf/2306.09285v2" } ], "statement": "# Quantum-metric-related nonlinear electrical transport in antiferromagnetic MnBi2Te4\n\nTwo independent experiments reported low-temperature second-order electrical responses in even-layer antiferromagnetic MnBi2Te4 whose signs reverse with prepared antiferromagnetic order. Gao and colleagues engineered black-phosphorus interfaces and supported a predominantly nonlinear Hall response through symmetry, conductivity scaling and frequency-mixing controls. Wang and colleagues measured transverse and longitudinal nonlinear responses in four- and six-layer devices, including current-direction-dependent DC resistance. Their models attribute major contributions to energy-weighted quantum-metric geometry.\n\n## Scientific scope\n\nThe two sample platforms, tensor decompositions and carrier-sign patterns are distinct. Mechanism attribution relies on symmetry, low-temperature scaling and electronic models; it is not a direct reconstruction of the entire quantum metric or a universal exclusion of disorder and artifacts. The corrected journal article and the preprint supplementary material differ; further journal supplementary material may affect the details. Microwave rectification does not establish uniquely intrinsic mechanism or usable energy-conversion efficiency. No room-temperature, terahertz, lossless-current or device-deployment claim is established.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nAnyuan Gao; Yu-Fei Liu; Jian-Xiang Qiu; Barun Ghosh; Thaís V. Trevisan; Yugo Onishi; Chaowei Hu; Tiema Qian; Hung-Ju Tien; Shao-Wen Chen; Mengqi Huang; Damien Bérubé; Houchen Li; Christian Tzschaschel; Thao Dinh; Zhe Sun; Sheng-Chin Ho; Shang-Wei Lien; Bahadur Singh; Kenji Watanabe; Takashi Taniguchi; David C. Bell; Hsin Lin; Tay-Rong Chang; Chunhui Rita Du; Arun Bansil; Liang Fu; Ni Ni; Peter P. Orth; Qiong Ma; Su-Yang Xu; Naizhou Wang; Daniel Kaplan; Zhaowei Zhang; Tobias Holder; Ning Cao; Aifeng Wang; Xiaoyuan Zhou; Feifei Zhou; Zhengzhi Jiang; Chusheng Zhang; Shihao Ru; Hongbing Cai; Binghai Yan; Weibo Gao\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)](https://arxiv.org/pdf/2306.09575v2)\n- [Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (corrected Science formal body)](https://ciqm.harvard.edu/uploads/2/3/3/4/23349210/gao.pdf)\n- [Quantum metric induced nonlinear transport in a topological antiferromagnet (arXiv2306.09285v2)](https://arxiv.org/pdf/2306.09285v2)\n", "summary": "Two independent experiments reported low-temperature second-order electrical responses in even-layer antiferromagnetic MnBi2Te4 whose signs reverse with prepared antiferromagnetic order. Gao and colleagues engineered black-phosphorus interfaces and supported a predominantly nonlinear Hall response through symmetry, conductivity scaling and frequency-mixing controls. Wang and colleagues measured transverse and longitudinal nonlinear responses in four- and six-layer devices, including current-direction-dependent DC resistance. Their models attribute major contributions to energy-weighted quantum-metric geometry.", "title": "Quantum-metric-related nonlinear electrical transport in antiferromagnetic MnBi2Te4" }, "record_id": "urn:uuid:39d42e90-6602-490c-add3-9cd2f47fcbba", "version": 1, "source_ref": { "record_id": "urn:uuid:39d42e90-6602-490c-add3-9cd2f47fcbba", "version": 1, "content_hash": "sha256:7cbc4d1ae6434da3f42b2298f6de2d2547cf98759453a673a76340ecdc028f34" }, "export_view": "wrs-public-editorial-view-1", "public_view_hash": "sha256:0c379ba31f9e77521c52be75a069798fb4a6c616363f0766d3b8f0cbe97c4f14" }, "target": { "record_id": "urn:uuid:39d42e90-6602-490c-add3-9cd2f47fcbba", "version": 1, "content_hash": "sha256:7cbc4d1ae6434da3f42b2298f6de2d2547cf98759453a673a76340ecdc028f34" }, "published_grade": { "profile": "wrs-published-grade-1", "edition": "2026-10-28.1", "id": "gao-wang-teams-antiferromagnetic-quantum-metric-nonlinear-transport-2023", "entry_id": "gao-wang-teams-antiferromagnetic-quantum-metric-nonlinear-transport-2023", "revision": 1, "title": "Quantum-metric-related nonlinear electrical transport in antiferromagnetic MnBi2Te4", "context": "Condensed matter / quantum geometry and nonlinear transport", "track": "Source-reported experimental result or reusable measurement method", "band": "A", "modifier": "-", "status": "PROVISIONAL_EDITORIAL", "assessed_on": "2026-10-28", "evidence_cutoff": "2026-10-28", "achievement_state": "SUPPORTED_SCOPED_RESULT", "what_changed": "Two independent experiments reported low-temperature second-order electrical responses in even-layer antiferromagnetic MnBi2Te4 whose signs reverse with prepared antiferromagnetic order. Gao and colleagues engineered black-phosphorus interfaces and supported a predominantly nonlinear Hall response through symmetry, conductivity scaling and frequency-mixing controls. Wang and colleagues measured transverse and longitudinal nonlinear responses in four- and six-layer devices, including current-direction-dependent DC resistance. Their models attribute major contributions to energy-weighted quantum-metric geometry.", "scope": "Two independent experiments reported low-temperature second-order electrical responses in even-layer antiferromagnetic MnBi2Te4 whose signs reverse with prepared antiferromagnetic order. Gao and colleagues engineered black-phosphorus interfaces and supported a predominantly nonlinear Hall response through symmetry, conductivity scaling and frequency-mixing controls. Wang and colleagues measured transverse and longitudinal nonlinear responses in four- and six-layer devices, including current-direction-dependent DC resistance. Their models attribute major contributions to energy-weighted quantum-metric geometry. The two sample platforms, tensor decompositions and carrier-sign patterns are distinct. Mechanism attribution relies on symmetry, low-temperature scaling and electronic models; it is not a direct reconstruction of the entire quantum metric or a universal exclusion of disorder and artifacts. The corrected journal article and the preprint supplementary material differ; further journal supplementary material may affect the details. Microwave rectification does not establish uniquely intrinsic mechanism or usable energy-conversion efficiency. No room-temperature, terahertz, lossless-current or device-deployment claim is established.", "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The two sample platforms, tensor decompositions and carrier-sign patterns are distinct. Mechanism attribution relies on symmetry, low-temperature scaling and electronic models; it is not a direct reconstruction of the entire quantum metric or a universal exclusion of disorder and artifacts. The corrected journal article and the preprint supplementary material differ; further journal supplementary material may affect the details. Microwave rectification does not establish uniquely intrinsic mechanism or usable energy-conversion efficiency. No room-temperature, terahertz, lossless-current or device-deployment claim is established.", "references": [ { "title": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (arXiv2306.09575v2)", "url": "https://arxiv.org/pdf/2306.09575v2", "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained." }, { "title": "Quantum metric nonlinear Hall effect in a topological antiferromagnetic heterostructure (corrected Science formal body)", "url": "https://ciqm.harvard.edu/uploads/2/3/3/4/23349210/gao.pdf", "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained." }, { "title": "Quantum metric induced nonlinear transport in a topological antiferromagnet (arXiv2306.09285v2)", "url": "https://arxiv.org/pdf/2306.09285v2", "locator": "Original scoped contribution, statement/method and evidence limits; source-specific attribution retained." } ], "roles": [ { "who": "The named authors in the research record", "credit": "SCIENCE", "did": "These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged." } ], "target": { "record_id": "urn:uuid:39d42e90-6602-490c-add3-9cd2f47fcbba", "version": 1, "content_hash": "sha256:7cbc4d1ae6434da3f42b2298f6de2d2547cf98759453a673a76340ecdc028f34" }, "scientific_correctness_certified": false, "independent_expert_calibration": false, "method": "PROPRIETARY", "points": "85000" }, "canonical_agent_submission": false, "scientific_verification_awarded": false, "reader_guide": null, "reading_status": "SOURCE_LINKED_NOTE" }