{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:P3MOQIYJ6TD64JSBMSWKK52P4J","short_pith_number":"pith:P3MOQIYJ","schema_version":"1.0","canonical_sha256":"7ed8e82309f4c7ee264164aca5774fe27fccb41a55857881f541091d5b736f80","source":{"kind":"arxiv","id":"0809.0735","version":1},"attestation_state":"computed","paper":{"title":"Effect of Zn substitution for Cu on Ca$_{2-x}$Na$_{x}$CuO$_{2}$Cl$_{2}$ near the hole concentration of 1/8 per Cu","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"A. Koda, I. Yamada, K. H. Satoh, K. Oka, M. Azuma, M. Hiraishi, M. Miyazaki, M. Takano, R. Kadono, S. Takeshita, Y. Shimakawa","submitted_at":"2008-09-04T02:23:25Z","abstract_excerpt":"A weakening of superconductivity upon substitution of Cu by Zn (0.5~1 %) is observed in a high-T_c cuprate, Ca_{2-x}Na_xCuO2Cl2, near the hole concentration of 1/8 per Cu. The superconducting transition temperature and its volume fraction, estimated by magnetic susceptibility, exhibit a sizable anomaly for x=0.12~0.14, where the slowing down of Cu spin fluctuations below 5 K is demonstrated by muon spin relaxation experiments. These observations are in close resemblance to other typical cuprates including YBa2Cu3O_{7-d}, and Bi2Sr2Ca_{1-x}Y_xCu2O_{8+d}, providing further evidence that Zn-induc"},"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":"0809.0735","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-09-04T02:23:25Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"730b4e0f050bb1a9725847daff9a19d01be551b2ccad1b7c895f53bbb379d748","abstract_canon_sha256":"fe99e74d8135f18fd51d93774a0fc21c7863cc9e5e220461c24c84eadb3f2626"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:12:34.593734Z","signature_b64":"xuv2wKfWXW9mSWg/kbJwNOhhjjHnF0e3UHLMa5EAMy/9QXJoEtbwoN6RNWeFTpHlejv5KMw/zbnyWUVR5bBnCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ed8e82309f4c7ee264164aca5774fe27fccb41a55857881f541091d5b736f80","last_reissued_at":"2026-07-04T17:12:34.593283Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:12:34.593283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Effect of Zn substitution for Cu on Ca$_{2-x}$Na$_{x}$CuO$_{2}$Cl$_{2}$ near the hole concentration of 1/8 per Cu","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"A. Koda, I. Yamada, K. H. Satoh, K. Oka, M. Azuma, M. Hiraishi, M. Miyazaki, M. Takano, R. Kadono, S. Takeshita, Y. Shimakawa","submitted_at":"2008-09-04T02:23:25Z","abstract_excerpt":"A weakening of superconductivity upon substitution of Cu by Zn (0.5~1 %) is observed in a high-T_c cuprate, Ca_{2-x}Na_xCuO2Cl2, near the hole concentration of 1/8 per Cu. The superconducting transition temperature and its volume fraction, estimated by magnetic susceptibility, exhibit a sizable anomaly for x=0.12~0.14, where the slowing down of Cu spin fluctuations below 5 K is demonstrated by muon spin relaxation experiments. These observations are in close resemblance to other typical cuprates including YBa2Cu3O_{7-d}, and Bi2Sr2Ca_{1-x}Y_xCu2O_{8+d}, providing further evidence that Zn-induc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.0735","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/0809.0735/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":"0809.0735","created_at":"2026-07-04T17:12:34.593359+00:00"},{"alias_kind":"arxiv_version","alias_value":"0809.0735v1","created_at":"2026-07-04T17:12:34.593359+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.0735","created_at":"2026-07-04T17:12:34.593359+00:00"},{"alias_kind":"pith_short_12","alias_value":"P3MOQIYJ6TD6","created_at":"2026-07-04T17:12:34.593359+00:00"},{"alias_kind":"pith_short_16","alias_value":"P3MOQIYJ6TD64JSB","created_at":"2026-07-04T17:12:34.593359+00:00"},{"alias_kind":"pith_short_8","alias_value":"P3MOQIYJ","created_at":"2026-07-04T17:12:34.593359+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/P3MOQIYJ6TD64JSBMSWKK52P4J","json":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J.json","graph_json":"https://pith.science/api/pith-number/P3MOQIYJ6TD64JSBMSWKK52P4J/graph.json","events_json":"https://pith.science/api/pith-number/P3MOQIYJ6TD64JSBMSWKK52P4J/events.json","paper":"https://pith.science/paper/P3MOQIYJ"},"agent_actions":{"view_html":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J","download_json":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J.json","view_paper":"https://pith.science/paper/P3MOQIYJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0809.0735&json=true","fetch_graph":"https://pith.science/api/pith-number/P3MOQIYJ6TD64JSBMSWKK52P4J/graph.json","fetch_events":"https://pith.science/api/pith-number/P3MOQIYJ6TD64JSBMSWKK52P4J/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J/action/timestamp_anchor","attest_storage":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J/action/storage_attestation","attest_author":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J/action/author_attestation","sign_citation":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J/action/citation_signature","submit_replication":"https://pith.science/pith/P3MOQIYJ6TD64JSBMSWKK52P4J/action/replication_record"}},"created_at":"2026-07-04T17:12:34.593359+00:00","updated_at":"2026-07-04T17:12:34.593359+00:00"}