{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:ANFWV7M56FRBQQMOUY7XGAAOK4","short_pith_number":"pith:ANFWV7M5","schema_version":"1.0","canonical_sha256":"034b6afd9df16218418ea63f73000e573a1fa4fedf2f6f1e91bd27e29ea5fc98","source":{"kind":"arxiv","id":"2301.02759","version":2},"attestation_state":"computed","paper":{"title":"Two-dimensional topological insulator state in cadmium arsenide thin films","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander C. Lygo, Arman Rashidi, Binghao Guo, Pablo Cuadros-Romero, Susanne Stemmer, Victor Huang","submitted_at":"2023-01-07T01:05:12Z","abstract_excerpt":"Two-dimensional topological insulators (2D TIs) are a highly desired quantum phase but few materials have demonstrated clear signatures of a 2D TI state. It has been predicted that 2D TIs can be created from thin films of three-dimensional TIs by reducing the film thickness until the surface states hybridize. Here, we employ this technique to report the first observation of a 2D TI state in epitaxial thin films of cadmium arsenide, a prototype Dirac semimetal in bulk form and a 3D TI in thin films. Using magnetotransport measurements with electrostatic gating, we observe a Landau level spectru"},"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":"2301.02759","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2023-01-07T01:05:12Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"27fe218f417f9fad29dd8a4c4b6d38415b052b39499fee11d031b6dd76642a91","abstract_canon_sha256":"acff2f61cfe5d089b423fb56ef0af13103e2c1bc1fce81a926a27c9d2641b104"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:42:30.076034Z","signature_b64":"8MkpThXvhoMcQXIl/7bPeZ4AaPyGyOCUsjb4kjJvQDWnEoUxq6b25tvNgqlpGkgCJCRj1R2heFbvf1I0qmi9CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"034b6afd9df16218418ea63f73000e573a1fa4fedf2f6f1e91bd27e29ea5fc98","last_reissued_at":"2026-07-05T05:42:30.075502Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:42:30.075502Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Two-dimensional topological insulator state in cadmium arsenide thin films","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander C. Lygo, Arman Rashidi, Binghao Guo, Pablo Cuadros-Romero, Susanne Stemmer, Victor Huang","submitted_at":"2023-01-07T01:05:12Z","abstract_excerpt":"Two-dimensional topological insulators (2D TIs) are a highly desired quantum phase but few materials have demonstrated clear signatures of a 2D TI state. It has been predicted that 2D TIs can be created from thin films of three-dimensional TIs by reducing the film thickness until the surface states hybridize. Here, we employ this technique to report the first observation of a 2D TI state in epitaxial thin films of cadmium arsenide, a prototype Dirac semimetal in bulk form and a 3D TI in thin films. Using magnetotransport measurements with electrostatic gating, we observe a Landau level spectru"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.02759","kind":"arxiv","version":2},"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/2301.02759/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":"2301.02759","created_at":"2026-07-05T05:42:30.075556+00:00"},{"alias_kind":"arxiv_version","alias_value":"2301.02759v2","created_at":"2026-07-05T05:42:30.075556+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.02759","created_at":"2026-07-05T05:42:30.075556+00:00"},{"alias_kind":"pith_short_12","alias_value":"ANFWV7M56FRB","created_at":"2026-07-05T05:42:30.075556+00:00"},{"alias_kind":"pith_short_16","alias_value":"ANFWV7M56FRBQQMO","created_at":"2026-07-05T05:42:30.075556+00:00"},{"alias_kind":"pith_short_8","alias_value":"ANFWV7M5","created_at":"2026-07-05T05:42:30.075556+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4","json":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4.json","graph_json":"https://pith.science/api/pith-number/ANFWV7M56FRBQQMOUY7XGAAOK4/graph.json","events_json":"https://pith.science/api/pith-number/ANFWV7M56FRBQQMOUY7XGAAOK4/events.json","paper":"https://pith.science/paper/ANFWV7M5"},"agent_actions":{"view_html":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4","download_json":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4.json","view_paper":"https://pith.science/paper/ANFWV7M5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2301.02759&json=true","fetch_graph":"https://pith.science/api/pith-number/ANFWV7M56FRBQQMOUY7XGAAOK4/graph.json","fetch_events":"https://pith.science/api/pith-number/ANFWV7M56FRBQQMOUY7XGAAOK4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4/action/storage_attestation","attest_author":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4/action/author_attestation","sign_citation":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4/action/citation_signature","submit_replication":"https://pith.science/pith/ANFWV7M56FRBQQMOUY7XGAAOK4/action/replication_record"}},"created_at":"2026-07-05T05:42:30.075556+00:00","updated_at":"2026-07-05T05:42:30.075556+00:00"}