{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:SA7DW3MRNPWJNQF4DOR77N5DMC","short_pith_number":"pith:SA7DW3MR","schema_version":"1.0","canonical_sha256":"903e3b6d916bec96c0bc1ba3ffb7a360a3725a4f871c53efb16b3f9d7c62eb56","source":{"kind":"arxiv","id":"1912.12581","version":2},"attestation_state":"computed","paper":{"title":"t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba$_2$CuO$_{3+\\delta}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Fu-Chun Zhang, Sen Zhou, Wei-Qiang Chen, Zhan Wang","submitted_at":"2019-12-29T05:17:41Z","abstract_excerpt":"Layered copper oxides have highest superconducting transition temperatures at ambient pressure. Its mechanism remains a grand challenge in condensed matter physics. The essential physics lying in 2-dimensional copper-oxygen layers is well described by a single band Hubbard model or its strong coupling limit t-J model in 2-dimensional square lattice. Recently discovered high temperature superconductor Ba$_2$CuO$_{3+\\delta}$ with $\\delta \\sim 0.2$ has different crystal structure with large portion of in-plane oxygen vacancies. We observe that an oxygen vacancy breaks the bond of its two neighbor"},"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":"1912.12581","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-12-29T05:17:41Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"7a6e410493da9221eded7b195a0d942ff84321412e9d07793d8e2bc7c57b982c","abstract_canon_sha256":"60f99b0e5f8fccc3e55f454d2799519b64349c5f482c2cc1474c31828198261a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:05:40.844754Z","signature_b64":"oub4qSKnYQA+uBrTe6fgJquIzFJ2kvLgQBZ67eBWduDMzmFp6rQQbNJ8Jyu1H3Hc/AaY/ve394neiIWISM1pBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"903e3b6d916bec96c0bc1ba3ffb7a360a3725a4f871c53efb16b3f9d7c62eb56","last_reissued_at":"2026-07-05T01:05:40.844258Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:05:40.844258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"t-J model on the effective brick-wall lattice for the recently discovered high-temperature superconductor Ba$_2$CuO$_{3+\\delta}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Fu-Chun Zhang, Sen Zhou, Wei-Qiang Chen, Zhan Wang","submitted_at":"2019-12-29T05:17:41Z","abstract_excerpt":"Layered copper oxides have highest superconducting transition temperatures at ambient pressure. Its mechanism remains a grand challenge in condensed matter physics. The essential physics lying in 2-dimensional copper-oxygen layers is well described by a single band Hubbard model or its strong coupling limit t-J model in 2-dimensional square lattice. Recently discovered high temperature superconductor Ba$_2$CuO$_{3+\\delta}$ with $\\delta \\sim 0.2$ has different crystal structure with large portion of in-plane oxygen vacancies. We observe that an oxygen vacancy breaks the bond of its two neighbor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.12581","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/1912.12581/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":"1912.12581","created_at":"2026-07-05T01:05:40.844323+00:00"},{"alias_kind":"arxiv_version","alias_value":"1912.12581v2","created_at":"2026-07-05T01:05:40.844323+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.12581","created_at":"2026-07-05T01:05:40.844323+00:00"},{"alias_kind":"pith_short_12","alias_value":"SA7DW3MRNPWJ","created_at":"2026-07-05T01:05:40.844323+00:00"},{"alias_kind":"pith_short_16","alias_value":"SA7DW3MRNPWJNQF4","created_at":"2026-07-05T01:05:40.844323+00:00"},{"alias_kind":"pith_short_8","alias_value":"SA7DW3MR","created_at":"2026-07-05T01:05:40.844323+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/SA7DW3MRNPWJNQF4DOR77N5DMC","json":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC.json","graph_json":"https://pith.science/api/pith-number/SA7DW3MRNPWJNQF4DOR77N5DMC/graph.json","events_json":"https://pith.science/api/pith-number/SA7DW3MRNPWJNQF4DOR77N5DMC/events.json","paper":"https://pith.science/paper/SA7DW3MR"},"agent_actions":{"view_html":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC","download_json":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC.json","view_paper":"https://pith.science/paper/SA7DW3MR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1912.12581&json=true","fetch_graph":"https://pith.science/api/pith-number/SA7DW3MRNPWJNQF4DOR77N5DMC/graph.json","fetch_events":"https://pith.science/api/pith-number/SA7DW3MRNPWJNQF4DOR77N5DMC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC/action/storage_attestation","attest_author":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC/action/author_attestation","sign_citation":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC/action/citation_signature","submit_replication":"https://pith.science/pith/SA7DW3MRNPWJNQF4DOR77N5DMC/action/replication_record"}},"created_at":"2026-07-05T01:05:40.844323+00:00","updated_at":"2026-07-05T01:05:40.844323+00:00"}