{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:ODXECM3T3YSKSOU5YVNKUMPUI7","short_pith_number":"pith:ODXECM3T","schema_version":"1.0","canonical_sha256":"70ee413373de24a93a9dc55aaa31f447f98f5f4080d7701ea7da7d3e8374d7e1","source":{"kind":"arxiv","id":"1007.1494","version":2},"attestation_state":"computed","paper":{"title":"The spin states of Co ions in La1.5Ca0.5CoO4 from first-principles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Guoren Zhang, H. Q. Lin, Hua Wu, Ting Jia, Xiaoli Zhang, Ying Guo, Zhi Zeng","submitted_at":"2010-07-09T02:03:35Z","abstract_excerpt":"The spin states and electronic structure of layered perovskite La1.5Ca0.5CoO4 are investigated using fullpotential linearized augmented plane-wave method. All the computational results indicate that the Co2+ ion is in a high-spin state and the Co3+ in a low-spin state. The Co2+ t2g orbitals with a small crystal-field splitting are mixed by spin-orbit coupling, which accounts for the observed easy in-plane magnetism. The nonmagnetic LS-Co3+ state, which is stabilized by a strong crystal field, provides a natural explanation for the observed low magnetic ordering temperature and a spin-blockade "},"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":"1007.1494","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-07-09T02:03:35Z","cross_cats_sorted":[],"title_canon_sha256":"40c87df6d238c9fc0f499de445f3063d10e8a062c173c9b28acd441bfb75f679","abstract_canon_sha256":"ed71ad6ca0a51f4c925837349598d57fa05c8dbeba49ea2b29c24de193d042f8"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:23:48.204405Z","signature_b64":"It5PwCXdnbgB2T4xK5M4va7jvnVovBmjIKjim/iCQtZxkiQlVoOnDg5oD3+lLqoNHY+5MJdxaSU/qHCOw0JbAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"70ee413373de24a93a9dc55aaa31f447f98f5f4080d7701ea7da7d3e8374d7e1","last_reissued_at":"2026-05-18T03:23:48.203765Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:23:48.203765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The spin states of Co ions in La1.5Ca0.5CoO4 from first-principles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Guoren Zhang, H. Q. Lin, Hua Wu, Ting Jia, Xiaoli Zhang, Ying Guo, Zhi Zeng","submitted_at":"2010-07-09T02:03:35Z","abstract_excerpt":"The spin states and electronic structure of layered perovskite La1.5Ca0.5CoO4 are investigated using fullpotential linearized augmented plane-wave method. All the computational results indicate that the Co2+ ion is in a high-spin state and the Co3+ in a low-spin state. The Co2+ t2g orbitals with a small crystal-field splitting are mixed by spin-orbit coupling, which accounts for the observed easy in-plane magnetism. The nonmagnetic LS-Co3+ state, which is stabilized by a strong crystal field, provides a natural explanation for the observed low magnetic ordering temperature and a spin-blockade "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1494","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":""},"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":"1007.1494","created_at":"2026-05-18T03:23:48.203889+00:00"},{"alias_kind":"arxiv_version","alias_value":"1007.1494v2","created_at":"2026-05-18T03:23:48.203889+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.1494","created_at":"2026-05-18T03:23:48.203889+00:00"},{"alias_kind":"pith_short_12","alias_value":"ODXECM3T3YSK","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_16","alias_value":"ODXECM3T3YSKSOU5","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_8","alias_value":"ODXECM3T","created_at":"2026-05-18T12:26:12.377268+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/ODXECM3T3YSKSOU5YVNKUMPUI7","json":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7.json","graph_json":"https://pith.science/api/pith-number/ODXECM3T3YSKSOU5YVNKUMPUI7/graph.json","events_json":"https://pith.science/api/pith-number/ODXECM3T3YSKSOU5YVNKUMPUI7/events.json","paper":"https://pith.science/paper/ODXECM3T"},"agent_actions":{"view_html":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7","download_json":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7.json","view_paper":"https://pith.science/paper/ODXECM3T","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1007.1494&json=true","fetch_graph":"https://pith.science/api/pith-number/ODXECM3T3YSKSOU5YVNKUMPUI7/graph.json","fetch_events":"https://pith.science/api/pith-number/ODXECM3T3YSKSOU5YVNKUMPUI7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7/action/storage_attestation","attest_author":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7/action/author_attestation","sign_citation":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7/action/citation_signature","submit_replication":"https://pith.science/pith/ODXECM3T3YSKSOU5YVNKUMPUI7/action/replication_record"}},"created_at":"2026-05-18T03:23:48.203889+00:00","updated_at":"2026-05-18T03:23:48.203889+00:00"}