{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:TX4JC7Q7DQDYZIWFP4YWTUJJMF","short_pith_number":"pith:TX4JC7Q7","schema_version":"1.0","canonical_sha256":"9df8917e1f1c078ca2c57f3169d129617851b073a87da1a941ee8baa81fa907e","source":{"kind":"arxiv","id":"cond-mat/0503346","version":2},"attestation_state":"computed","paper":{"title":"Electron correlation and Fermi surface topology of Na$_x$CoO$_2$","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Hong Ding, Meng Gao, Patrick A. Lee, Sen Zhou, Ziqiang Wang","submitted_at":"2005-03-14T21:31:36Z","abstract_excerpt":"The electronic structure of Na$_x$CoO$_2$ revealed by recent photoemission experiments shows important deviations from band theory predictions. The six small Fermi surface pockets predicted by LDA calculations have not been observed as the associated $e_g^\\prime$ band fails to cross the Fermi level for a wide range of sodium doping concentration $x$. In addition, significant bandwidth renormalizations of the $t_{2g}$ complex have been observed. We show that these discrepancies are due to strong electronic correlations by studying the multi-orbital Hubbard model in the Hartree-Fock and strong-c"},"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":"cond-mat/0503346","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2005-03-14T21:31:36Z","cross_cats_sorted":[],"title_canon_sha256":"18398f3cd0930332900bb00c7818611cb5b61afdaedf692d5d0d18685f7d6393","abstract_canon_sha256":"4cac48b7692ec01b6c3651f676b0978a8d29d2da4ea2be25734cdc8f553ee006"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:22:07.895686Z","signature_b64":"F4989+SXJWIBgvxi617CHnWaQpyElQDjMjEpvdoP6An01ng7lhPkR6LBtsz0R23PXLtBpd9u7ccAuHmmViqAAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9df8917e1f1c078ca2c57f3169d129617851b073a87da1a941ee8baa81fa907e","last_reissued_at":"2026-07-04T14:22:07.895196Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:22:07.895196Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Electron correlation and Fermi surface topology of Na$_x$CoO$_2$","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Hong Ding, Meng Gao, Patrick A. Lee, Sen Zhou, Ziqiang Wang","submitted_at":"2005-03-14T21:31:36Z","abstract_excerpt":"The electronic structure of Na$_x$CoO$_2$ revealed by recent photoemission experiments shows important deviations from band theory predictions. The six small Fermi surface pockets predicted by LDA calculations have not been observed as the associated $e_g^\\prime$ band fails to cross the Fermi level for a wide range of sodium doping concentration $x$. In addition, significant bandwidth renormalizations of the $t_{2g}$ complex have been observed. We show that these discrepancies are due to strong electronic correlations by studying the multi-orbital Hubbard model in the Hartree-Fock and strong-c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0503346","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/cond-mat/0503346/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":"cond-mat/0503346","created_at":"2026-07-04T14:22:07.895268+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0503346v2","created_at":"2026-07-04T14:22:07.895268+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0503346","created_at":"2026-07-04T14:22:07.895268+00:00"},{"alias_kind":"pith_short_12","alias_value":"TX4JC7Q7DQDY","created_at":"2026-07-04T14:22:07.895268+00:00"},{"alias_kind":"pith_short_16","alias_value":"TX4JC7Q7DQDYZIWF","created_at":"2026-07-04T14:22:07.895268+00:00"},{"alias_kind":"pith_short_8","alias_value":"TX4JC7Q7","created_at":"2026-07-04T14:22:07.895268+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/TX4JC7Q7DQDYZIWFP4YWTUJJMF","json":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF.json","graph_json":"https://pith.science/api/pith-number/TX4JC7Q7DQDYZIWFP4YWTUJJMF/graph.json","events_json":"https://pith.science/api/pith-number/TX4JC7Q7DQDYZIWFP4YWTUJJMF/events.json","paper":"https://pith.science/paper/TX4JC7Q7"},"agent_actions":{"view_html":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF","download_json":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF.json","view_paper":"https://pith.science/paper/TX4JC7Q7","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0503346&json=true","fetch_graph":"https://pith.science/api/pith-number/TX4JC7Q7DQDYZIWFP4YWTUJJMF/graph.json","fetch_events":"https://pith.science/api/pith-number/TX4JC7Q7DQDYZIWFP4YWTUJJMF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF/action/storage_attestation","attest_author":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF/action/author_attestation","sign_citation":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF/action/citation_signature","submit_replication":"https://pith.science/pith/TX4JC7Q7DQDYZIWFP4YWTUJJMF/action/replication_record"}},"created_at":"2026-07-04T14:22:07.895268+00:00","updated_at":"2026-07-04T14:22:07.895268+00:00"}