{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:CMJ7QCX6NOLVX3U5GU3Z7L3QBG","short_pith_number":"pith:CMJ7QCX6","schema_version":"1.0","canonical_sha256":"1313f80afe6b975bee9d35379faf70098e61a7bff02e48857d215cd3b8375218","source":{"kind":"arxiv","id":"0812.1192","version":1},"attestation_state":"computed","paper":{"title":"High-T_c superconductivity induced by doping rare earth elements into CaFeAsF","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Bing Shen, Bin Zeng, Fei Han, Gang Mu, Hai-Hu Wen, Peng Cheng, Xiyu Zhu","submitted_at":"2008-12-05T18:22:43Z","abstract_excerpt":"We have successfully synthesized the fluoride-arsenide compounds Ca$_{1-x}$RE$_x$FeAsF (RE=Nd, Pr; x=0, 0.6). The x-ray powder diffraction confirmed that the main phases of our samples are Ca$_{1-x}$RE$_x$FeAsF with the ZrCuSiAs structure. By measuring resistivity, superconductivity was observed at 57.4 K in Nd-doped and 52.8 K in Pr-doped samples with x=0.6. Bulk superconductivity was also proved by the DC magnetization measurements in both samples. Hall effect measurements revealed hole-like charge carriers in the parent compound CaFeAsF with a clear resistivity anomaly below 118 K, while th"},"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":"0812.1192","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-12-05T18:22:43Z","cross_cats_sorted":[],"title_canon_sha256":"1c569f5f1949f30cee5defbe132874008bd414dcfe5c172e3c213049225bda3e","abstract_canon_sha256":"59153210bbf5cc1cd4e68efd351b6249b5d42735d76deb235ea8a3eb4db42064"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:41:36.858201Z","signature_b64":"1vJgAEFD3j383fPeoazKQVQs+Av9FPFQoj1Yc1jKu/Uvx9UYPecunTtz5hDCFfn10xTHxJxJYwgidDaydL6jBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1313f80afe6b975bee9d35379faf70098e61a7bff02e48857d215cd3b8375218","last_reissued_at":"2026-07-04T15:41:36.857771Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:41:36.857771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"High-T_c superconductivity induced by doping rare earth elements into CaFeAsF","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Bing Shen, Bin Zeng, Fei Han, Gang Mu, Hai-Hu Wen, Peng Cheng, Xiyu Zhu","submitted_at":"2008-12-05T18:22:43Z","abstract_excerpt":"We have successfully synthesized the fluoride-arsenide compounds Ca$_{1-x}$RE$_x$FeAsF (RE=Nd, Pr; x=0, 0.6). The x-ray powder diffraction confirmed that the main phases of our samples are Ca$_{1-x}$RE$_x$FeAsF with the ZrCuSiAs structure. By measuring resistivity, superconductivity was observed at 57.4 K in Nd-doped and 52.8 K in Pr-doped samples with x=0.6. Bulk superconductivity was also proved by the DC magnetization measurements in both samples. Hall effect measurements revealed hole-like charge carriers in the parent compound CaFeAsF with a clear resistivity anomaly below 118 K, while th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0812.1192","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/0812.1192/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":"0812.1192","created_at":"2026-07-04T15:41:36.857830+00:00"},{"alias_kind":"arxiv_version","alias_value":"0812.1192v1","created_at":"2026-07-04T15:41:36.857830+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0812.1192","created_at":"2026-07-04T15:41:36.857830+00:00"},{"alias_kind":"pith_short_12","alias_value":"CMJ7QCX6NOLV","created_at":"2026-07-04T15:41:36.857830+00:00"},{"alias_kind":"pith_short_16","alias_value":"CMJ7QCX6NOLVX3U5","created_at":"2026-07-04T15:41:36.857830+00:00"},{"alias_kind":"pith_short_8","alias_value":"CMJ7QCX6","created_at":"2026-07-04T15:41:36.857830+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/CMJ7QCX6NOLVX3U5GU3Z7L3QBG","json":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG.json","graph_json":"https://pith.science/api/pith-number/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/graph.json","events_json":"https://pith.science/api/pith-number/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/events.json","paper":"https://pith.science/paper/CMJ7QCX6"},"agent_actions":{"view_html":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG","download_json":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG.json","view_paper":"https://pith.science/paper/CMJ7QCX6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0812.1192&json=true","fetch_graph":"https://pith.science/api/pith-number/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/graph.json","fetch_events":"https://pith.science/api/pith-number/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/action/storage_attestation","attest_author":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/action/author_attestation","sign_citation":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/action/citation_signature","submit_replication":"https://pith.science/pith/CMJ7QCX6NOLVX3U5GU3Z7L3QBG/action/replication_record"}},"created_at":"2026-07-04T15:41:36.857830+00:00","updated_at":"2026-07-04T15:41:36.857830+00:00"}