{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2005:63QLLDJAW5AWFQMIQV7L6UZL7K","short_pith_number":"pith:63QLLDJA","schema_version":"1.0","canonical_sha256":"f6e0b58d20b74162c188857ebf532bfaa25cd88df4f2d056eb2158b6c8bb5184","source":{"kind":"arxiv","id":"cond-mat/0508197","version":1},"attestation_state":"computed","paper":{"title":"23Na NMR Studies of Non-superconducting and Superconducting Na0.35CoO2-1.3H2O (Tc < 1.8 and ~ 4.5 K)","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C. Michioka, H. Ohta, K. Yoshimura, Y. Itoh","submitted_at":"2005-08-08T12:29:19Z","abstract_excerpt":"We report 23Na NMR studies of the polycrystalline samples of bilayer hydrated cobalt oxides Na0.35CoO2-1.3H2O with the superconducting transition temperatures Tc < 1.8 and ~ 4.5 K. The magnitude of the 23Na nuclear spin-lattice relaxation rate 23(1/T1) significantly decreased from non-hydrated Na0.7CoO2 to the bilayer hydrates. We found that the temperature dependence of 23(1/T1) of the non-superconducting bilayer hydrate is similar to that of the non-hydrated Na0.7CoO2, the spin dynamics of which is understood by A-type (intra-layer ferromagnetic and inter-layer antiferromagnetic) spin fluctu"},"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/0508197","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2005-08-08T12:29:19Z","cross_cats_sorted":[],"title_canon_sha256":"d43da362f5001779994aea69c483289319c3025071468c490820e8e6662605a4","abstract_canon_sha256":"d68f6d53b02998abc27ec42b1d4d6b9ae3647927723d3259f8aeb62d3b96d9bb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:22:29.933768Z","signature_b64":"ROXOrv302G94xordHZ2H544v5MhQOz1RzoL+ybVC11VVqcwwtf2/hMX22SjNV5F4nm8nrBzUK/vtCPe6sfbHDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6e0b58d20b74162c188857ebf532bfaa25cd88df4f2d056eb2158b6c8bb5184","last_reissued_at":"2026-07-04T14:22:29.933387Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:22:29.933387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"23Na NMR Studies of Non-superconducting and Superconducting Na0.35CoO2-1.3H2O (Tc < 1.8 and ~ 4.5 K)","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C. Michioka, H. Ohta, K. Yoshimura, Y. Itoh","submitted_at":"2005-08-08T12:29:19Z","abstract_excerpt":"We report 23Na NMR studies of the polycrystalline samples of bilayer hydrated cobalt oxides Na0.35CoO2-1.3H2O with the superconducting transition temperatures Tc < 1.8 and ~ 4.5 K. The magnitude of the 23Na nuclear spin-lattice relaxation rate 23(1/T1) significantly decreased from non-hydrated Na0.7CoO2 to the bilayer hydrates. We found that the temperature dependence of 23(1/T1) of the non-superconducting bilayer hydrate is similar to that of the non-hydrated Na0.7CoO2, the spin dynamics of which is understood by A-type (intra-layer ferromagnetic and inter-layer antiferromagnetic) spin fluctu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0508197","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/cond-mat/0508197/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/0508197","created_at":"2026-07-04T14:22:29.933445+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0508197v1","created_at":"2026-07-04T14:22:29.933445+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0508197","created_at":"2026-07-04T14:22:29.933445+00:00"},{"alias_kind":"pith_short_12","alias_value":"63QLLDJAW5AW","created_at":"2026-07-04T14:22:29.933445+00:00"},{"alias_kind":"pith_short_16","alias_value":"63QLLDJAW5AWFQMI","created_at":"2026-07-04T14:22:29.933445+00:00"},{"alias_kind":"pith_short_8","alias_value":"63QLLDJA","created_at":"2026-07-04T14:22:29.933445+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/63QLLDJAW5AWFQMIQV7L6UZL7K","json":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K.json","graph_json":"https://pith.science/api/pith-number/63QLLDJAW5AWFQMIQV7L6UZL7K/graph.json","events_json":"https://pith.science/api/pith-number/63QLLDJAW5AWFQMIQV7L6UZL7K/events.json","paper":"https://pith.science/paper/63QLLDJA"},"agent_actions":{"view_html":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K","download_json":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K.json","view_paper":"https://pith.science/paper/63QLLDJA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/0508197&json=true","fetch_graph":"https://pith.science/api/pith-number/63QLLDJAW5AWFQMIQV7L6UZL7K/graph.json","fetch_events":"https://pith.science/api/pith-number/63QLLDJAW5AWFQMIQV7L6UZL7K/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K/action/timestamp_anchor","attest_storage":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K/action/storage_attestation","attest_author":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K/action/author_attestation","sign_citation":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K/action/citation_signature","submit_replication":"https://pith.science/pith/63QLLDJAW5AWFQMIQV7L6UZL7K/action/replication_record"}},"created_at":"2026-07-04T14:22:29.933445+00:00","updated_at":"2026-07-04T14:22:29.933445+00:00"}