{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:PAEOT4BSV4CJG45PUHRYVZ7QI5","short_pith_number":"pith:PAEOT4BS","canonical_record":{"source":{"id":"0805.2647","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-05-17T06:27:44Z","cross_cats_sorted":[],"title_canon_sha256":"197bddee86f84444ce41703983e9a94dc5086d0316d500f729af49fd33841787","abstract_canon_sha256":"212138dc5dc3f77033103932219985c168e44af3b0174a242717a1823e3f8d9a"},"schema_version":"1.0"},"canonical_sha256":"7808e9f032af049373afa1e38ae7f04774278a562534dd225fac647863260a1d","source":{"kind":"arxiv","id":"0805.2647","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.2647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"0805.2647v2","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.2647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"PAEOT4BSV4CJ","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"PAEOT4BSV4CJG45P","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"PAEOT4BS","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:PAEOT4BSV4CJG45PUHRYVZ7QI5","target":"record","payload":{"canonical_record":{"source":{"id":"0805.2647","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-05-17T06:27:44Z","cross_cats_sorted":[],"title_canon_sha256":"197bddee86f84444ce41703983e9a94dc5086d0316d500f729af49fd33841787","abstract_canon_sha256":"212138dc5dc3f77033103932219985c168e44af3b0174a242717a1823e3f8d9a"},"schema_version":"1.0"},"canonical_sha256":"7808e9f032af049373afa1e38ae7f04774278a562534dd225fac647863260a1d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:29.793347Z","signature_b64":"ho7bqAi8iNjDV74h9o/vvjX/kHoI91a0kmmVceheWVDMv66CiLsQMl/UdaZ2Mw42e3/hO2sx+DOD4RyCmfcmAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7808e9f032af049373afa1e38ae7f04774278a562534dd225fac647863260a1d","last_reissued_at":"2026-05-18T01:01:29.792919Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:29.792919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0805.2647","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sP3oSrEJotaOTgpnA2w6dNypqfW6NTklD/8NVwI1HWrUMNT1Um+XuM322W99t4DPTZi3yPiuJAPku9KYN6+PAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T12:35:36.532117Z"},"content_sha256":"5e7ab9e51e6326242fdc8ba41a13eb36ac511cdef56ef15d7714df4c0b1a6b6e","schema_version":"1.0","event_id":"sha256:5e7ab9e51e6326242fdc8ba41a13eb36ac511cdef56ef15d7714df4c0b1a6b6e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:PAEOT4BSV4CJG45PUHRYVZ7QI5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unusual Pseudogap-like Features Observed in Iron Oxypnictide Superconductors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C.-T. Chen, H. Hosono, K. Ishizaka, M. Hirano, M. Okawa, S. Shin, S. Watanabe, T. Kiss, T. Shimojima, T. Togashi, X.-Y. Wang, Y. Ishida, Y. Kamihara","submitted_at":"2008-05-17T06:27:44Z","abstract_excerpt":"We have performed a temperature-dependent angle-integrated laser photoemission study of iron oxypnictide superconductors LaFeAsO:F and LaFePO:F exhibiting critical transition temperatures (Tc's) of 26 K and 5 K, respectively. We find that high-Tc LaFeAsO:F exhibits a temperature-dependent pseudogap-like feature extending over ~0.1 eV about the Fermi level at 250 K, whereas such a feature is absent in low-Tc LaFePO:F. We also find ~20-meV pseudogap-like features and signatures of superconducting gaps both in LaFeAsO:F and LaFePO:F. We discuss the possible origins of the unusual pseudogap-like f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.2647","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ewFIqA8rGsHuDA3BgqJ2rWUfNu8Y561qz8fD0HMX/Ykp928BP2MFVJyuT3uCG0IRKA61wR21ej0jqsp3iG2KBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T12:35:36.532494Z"},"content_sha256":"14e3dfa5451f1aafc146bf82f98d5278587d310cf4aff275f16139bc377d6dc5","schema_version":"1.0","event_id":"sha256:14e3dfa5451f1aafc146bf82f98d5278587d310cf4aff275f16139bc377d6dc5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PAEOT4BSV4CJG45PUHRYVZ7QI5/bundle.json","state_url":"https://pith.science/pith/PAEOT4BSV4CJG45PUHRYVZ7QI5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PAEOT4BSV4CJG45PUHRYVZ7QI5/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-04T12:35:36Z","links":{"resolver":"https://pith.science/pith/PAEOT4BSV4CJG45PUHRYVZ7QI5","bundle":"https://pith.science/pith/PAEOT4BSV4CJG45PUHRYVZ7QI5/bundle.json","state":"https://pith.science/pith/PAEOT4BSV4CJG45PUHRYVZ7QI5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PAEOT4BSV4CJG45PUHRYVZ7QI5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:PAEOT4BSV4CJG45PUHRYVZ7QI5","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"212138dc5dc3f77033103932219985c168e44af3b0174a242717a1823e3f8d9a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-05-17T06:27:44Z","title_canon_sha256":"197bddee86f84444ce41703983e9a94dc5086d0316d500f729af49fd33841787"},"schema_version":"1.0","source":{"id":"0805.2647","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0805.2647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"0805.2647v2","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0805.2647","created_at":"2026-05-18T01:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"PAEOT4BSV4CJ","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"PAEOT4BSV4CJG45P","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"PAEOT4BS","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:14e3dfa5451f1aafc146bf82f98d5278587d310cf4aff275f16139bc377d6dc5","target":"graph","created_at":"2026-05-18T01:01:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We have performed a temperature-dependent angle-integrated laser photoemission study of iron oxypnictide superconductors LaFeAsO:F and LaFePO:F exhibiting critical transition temperatures (Tc's) of 26 K and 5 K, respectively. We find that high-Tc LaFeAsO:F exhibits a temperature-dependent pseudogap-like feature extending over ~0.1 eV about the Fermi level at 250 K, whereas such a feature is absent in low-Tc LaFePO:F. We also find ~20-meV pseudogap-like features and signatures of superconducting gaps both in LaFeAsO:F and LaFePO:F. We discuss the possible origins of the unusual pseudogap-like f","authors_text":"C.-T. Chen, H. Hosono, K. Ishizaka, M. Hirano, M. Okawa, S. Shin, S. Watanabe, T. Kiss, T. Shimojima, T. Togashi, X.-Y. Wang, Y. Ishida, Y. Kamihara","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-05-17T06:27:44Z","title":"Unusual Pseudogap-like Features Observed in Iron Oxypnictide Superconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0805.2647","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5e7ab9e51e6326242fdc8ba41a13eb36ac511cdef56ef15d7714df4c0b1a6b6e","target":"record","created_at":"2026-05-18T01:01:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"212138dc5dc3f77033103932219985c168e44af3b0174a242717a1823e3f8d9a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2008-05-17T06:27:44Z","title_canon_sha256":"197bddee86f84444ce41703983e9a94dc5086d0316d500f729af49fd33841787"},"schema_version":"1.0","source":{"id":"0805.2647","kind":"arxiv","version":2}},"canonical_sha256":"7808e9f032af049373afa1e38ae7f04774278a562534dd225fac647863260a1d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7808e9f032af049373afa1e38ae7f04774278a562534dd225fac647863260a1d","first_computed_at":"2026-05-18T01:01:29.792919Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:29.792919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ho7bqAi8iNjDV74h9o/vvjX/kHoI91a0kmmVceheWVDMv66CiLsQMl/UdaZ2Mw42e3/hO2sx+DOD4RyCmfcmAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:29.793347Z","signed_message":"canonical_sha256_bytes"},"source_id":"0805.2647","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5e7ab9e51e6326242fdc8ba41a13eb36ac511cdef56ef15d7714df4c0b1a6b6e","sha256:14e3dfa5451f1aafc146bf82f98d5278587d310cf4aff275f16139bc377d6dc5"],"state_sha256":"fd9f5e92e663235272d9a04d0d9d0e499c82ede5aef9f1d2a242eb5f50bdbe35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TQaLzDBJRKeEdM22YckiTOdpMPcT/vXPsWmSsaWaBQI3jznpsiV8kP4jfisbgoeVFBHNMcXMKLMMJuqSOxEvCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T12:35:36.534584Z","bundle_sha256":"bfcddf6f0be2a9b795ae4dce276b8d71467b04107ad2d558c8eb0795943cdab9"}}