{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:ALPXFBY2O5DELY5GH3OES23KM3","short_pith_number":"pith:ALPXFBY2","schema_version":"1.0","canonical_sha256":"02df72871a774645e3a63edc496b6a66d00ead81f8224070953f8d82a65d8f38","source":{"kind":"arxiv","id":"2202.01734","version":1},"attestation_state":"computed","paper":{"title":"Anomalous Hall effect at half filling in twisted bilayer graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Chun-Chih Tseng, Jiun-Haw Chu, Kenji Watanabe, Matthew Yankowitz, Takashi Taniguchi, Xuetao Ma, Zhaoyu Liu","submitted_at":"2022-02-03T17:51:48Z","abstract_excerpt":"Magic-angle twisted bilayer graphene (tBLG) has been studied extensively owing to its wealth of symmetry-broken phases, correlated Chern insulators, orbital magnetism, and superconductivity. In particular, the anomalous Hall effect (AHE) has been observed at odd integer filling factors ($\\nu=1$ and $3$) in a small number of tBLG devices, indicating the emergence of a zero-field orbital magnetic state with spontaneously broken time-reversal symmetry. However, the AHE is typically not anticipated at half filling ($\\nu=2$) owing to competing intervalley coherent states, as well as spin-polarized "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2202.01734","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-02-03T17:51:48Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"c4d96f91461aed29b37d221ca6abe010932b32e79fefd3303df348da306b320f","abstract_canon_sha256":"14a4660ce316d91b707d5c5cf2beb8e920c9f08d65d270459c0e6360b01334b0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:23:56.836525Z","signature_b64":"K/bLNk3/GGXFEN2zJ/ipxcGEoG7/WmMHDVgp/pqgn5a1zHE6uk5+QlUC3s1ENhkkQztJsUeiYQqfIWH+3IgsAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02df72871a774645e3a63edc496b6a66d00ead81f8224070953f8d82a65d8f38","last_reissued_at":"2026-07-05T05:23:56.836086Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:23:56.836086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Anomalous Hall effect at half filling in twisted bilayer graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Chun-Chih Tseng, Jiun-Haw Chu, Kenji Watanabe, Matthew Yankowitz, Takashi Taniguchi, Xuetao Ma, Zhaoyu Liu","submitted_at":"2022-02-03T17:51:48Z","abstract_excerpt":"Magic-angle twisted bilayer graphene (tBLG) has been studied extensively owing to its wealth of symmetry-broken phases, correlated Chern insulators, orbital magnetism, and superconductivity. In particular, the anomalous Hall effect (AHE) has been observed at odd integer filling factors ($\\nu=1$ and $3$) in a small number of tBLG devices, indicating the emergence of a zero-field orbital magnetic state with spontaneously broken time-reversal symmetry. However, the AHE is typically not anticipated at half filling ($\\nu=2$) owing to competing intervalley coherent states, as well as spin-polarized "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.01734","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2202.01734/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2202.01734","created_at":"2026-07-05T05:23:56.836152+00:00"},{"alias_kind":"arxiv_version","alias_value":"2202.01734v1","created_at":"2026-07-05T05:23:56.836152+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.01734","created_at":"2026-07-05T05:23:56.836152+00:00"},{"alias_kind":"pith_short_12","alias_value":"ALPXFBY2O5DE","created_at":"2026-07-05T05:23:56.836152+00:00"},{"alias_kind":"pith_short_16","alias_value":"ALPXFBY2O5DELY5G","created_at":"2026-07-05T05:23:56.836152+00:00"},{"alias_kind":"pith_short_8","alias_value":"ALPXFBY2","created_at":"2026-07-05T05:23:56.836152+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2507.04399","citing_title":"Miniband Generation by Surface Acoustic Waves","ref_index":33,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3","json":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3.json","graph_json":"https://pith.science/api/pith-number/ALPXFBY2O5DELY5GH3OES23KM3/graph.json","events_json":"https://pith.science/api/pith-number/ALPXFBY2O5DELY5GH3OES23KM3/events.json","paper":"https://pith.science/paper/ALPXFBY2"},"agent_actions":{"view_html":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3","download_json":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3.json","view_paper":"https://pith.science/paper/ALPXFBY2","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2202.01734&json=true","fetch_graph":"https://pith.science/api/pith-number/ALPXFBY2O5DELY5GH3OES23KM3/graph.json","fetch_events":"https://pith.science/api/pith-number/ALPXFBY2O5DELY5GH3OES23KM3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3/action/storage_attestation","attest_author":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3/action/author_attestation","sign_citation":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3/action/citation_signature","submit_replication":"https://pith.science/pith/ALPXFBY2O5DELY5GH3OES23KM3/action/replication_record"}},"created_at":"2026-07-05T05:23:56.836152+00:00","updated_at":"2026-07-05T05:23:56.836152+00:00"}