{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:QNW2UV7LUYOGNJ2PVLOP3D5WEP","short_pith_number":"pith:QNW2UV7L","canonical_record":{"source":{"id":"1205.4125","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-05-18T10:11:05Z","cross_cats_sorted":[],"title_canon_sha256":"af93a0008c6f8dfd3c903b91fc3d6e1dacbf0a278cb85b209a1af49cf697d4ab","abstract_canon_sha256":"efd72da3ac546a817e7a1ebc5f3672e26e783b34b1233dba8b29cc13ede90f2b"},"schema_version":"1.0"},"canonical_sha256":"836daa57eba61c66a74faadcfd8fb623fe57db39454189a96e160ae9f721077b","source":{"kind":"arxiv","id":"1205.4125","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.4125","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1205.4125v1","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.4125","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"QNW2UV7LUYOG","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QNW2UV7LUYOGNJ2P","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QNW2UV7L","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:QNW2UV7LUYOGNJ2PVLOP3D5WEP","target":"record","payload":{"canonical_record":{"source":{"id":"1205.4125","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-05-18T10:11:05Z","cross_cats_sorted":[],"title_canon_sha256":"af93a0008c6f8dfd3c903b91fc3d6e1dacbf0a278cb85b209a1af49cf697d4ab","abstract_canon_sha256":"efd72da3ac546a817e7a1ebc5f3672e26e783b34b1233dba8b29cc13ede90f2b"},"schema_version":"1.0"},"canonical_sha256":"836daa57eba61c66a74faadcfd8fb623fe57db39454189a96e160ae9f721077b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:38:32.918464Z","signature_b64":"1ptcc67PR49YzG8toMcBiCCvpqfKV5HUYzyjTbOAnJZyv2n1mwUAOfxD5OTFvLca2agWUcer5bDeHszQ7j3RBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"836daa57eba61c66a74faadcfd8fb623fe57db39454189a96e160ae9f721077b","last_reissued_at":"2026-05-18T03:38:32.917771Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:38:32.917771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.4125","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dcjzqRmEQP6VUIdGcouUeg06ZY4z2oXHww7pB+UtHuT4j+pQ6v3VvY4U8RoVT6cOQ36wNpLhAuCRu8+uaQNyAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T06:50:11.100063Z"},"content_sha256":"425319015e3e64f5300b8c96b3a0158b2f6ef544e56c587fb583f70e027cbf36","schema_version":"1.0","event_id":"sha256:425319015e3e64f5300b8c96b3a0158b2f6ef544e56c587fb583f70e027cbf36"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:QNW2UV7LUYOGNJ2PVLOP3D5WEP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of the Two-Gap Superconductivity in GdO(F)FeAs by ScS-Andreev Spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A.S. Usol'tsev, A.V. Sadakov, E.P. Khlybov, L.F. Kulikova, M.G. Mikheev, O.E. Omel'yanovsky, S.A. Kuzmichev, S.N. Tchesnokov, T.E. Shanygina, V.M. Pudalov, Ya.G. Ponomarev, Yu.F. Eltsev","submitted_at":"2012-05-18T10:11:05Z","abstract_excerpt":"Current-voltage characteristics and dynamic conductance of the superconductor - constriction - superconductor junctions in GdO(F)FeAs polycrystalline samples with critical temperatures Tc^local = 46 - 53 K were investigated. Two superconducting gaps, the large Delta_L = 10.5 +- 2 meV, and the small one Delta_S = 2.3 +- 0.4 meV were clearly observed at T = 4.2 K. The 2Delta_L/kTc^local = 5.5 +- 1 ratio gives support to the strong coupling mechanism which is responsible for the high Tc value. Temperature dependence of the large gap Delta_L(T) indicates the presence of intrinsic proximity effect "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.4125","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":""},"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":"2026-05-18T03:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8CrWkUubFKqsX9sUFdkBjrPvkDUIxl+/5D/YC2PT2GE1aU4owZ+Z7lz+UW7WrR04pAEnj21CUyCRWiqt7i47AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T06:50:11.100474Z"},"content_sha256":"51cc9f5dfe09f9c31744f0dd9745990d74273b8dd1e1dc2fd38fd06e056d1ada","schema_version":"1.0","event_id":"sha256:51cc9f5dfe09f9c31744f0dd9745990d74273b8dd1e1dc2fd38fd06e056d1ada"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QNW2UV7LUYOGNJ2PVLOP3D5WEP/bundle.json","state_url":"https://pith.science/pith/QNW2UV7LUYOGNJ2PVLOP3D5WEP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QNW2UV7LUYOGNJ2PVLOP3D5WEP/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":"2026-05-23T06:50:11Z","links":{"resolver":"https://pith.science/pith/QNW2UV7LUYOGNJ2PVLOP3D5WEP","bundle":"https://pith.science/pith/QNW2UV7LUYOGNJ2PVLOP3D5WEP/bundle.json","state":"https://pith.science/pith/QNW2UV7LUYOGNJ2PVLOP3D5WEP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QNW2UV7LUYOGNJ2PVLOP3D5WEP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:QNW2UV7LUYOGNJ2PVLOP3D5WEP","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":"efd72da3ac546a817e7a1ebc5f3672e26e783b34b1233dba8b29cc13ede90f2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-05-18T10:11:05Z","title_canon_sha256":"af93a0008c6f8dfd3c903b91fc3d6e1dacbf0a278cb85b209a1af49cf697d4ab"},"schema_version":"1.0","source":{"id":"1205.4125","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.4125","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1205.4125v1","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.4125","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"QNW2UV7LUYOG","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QNW2UV7LUYOGNJ2P","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QNW2UV7L","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:51cc9f5dfe09f9c31744f0dd9745990d74273b8dd1e1dc2fd38fd06e056d1ada","target":"graph","created_at":"2026-05-18T03:38:32Z","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":"Current-voltage characteristics and dynamic conductance of the superconductor - constriction - superconductor junctions in GdO(F)FeAs polycrystalline samples with critical temperatures Tc^local = 46 - 53 K were investigated. Two superconducting gaps, the large Delta_L = 10.5 +- 2 meV, and the small one Delta_S = 2.3 +- 0.4 meV were clearly observed at T = 4.2 K. The 2Delta_L/kTc^local = 5.5 +- 1 ratio gives support to the strong coupling mechanism which is responsible for the high Tc value. Temperature dependence of the large gap Delta_L(T) indicates the presence of intrinsic proximity effect ","authors_text":"A.S. Usol'tsev, A.V. Sadakov, E.P. Khlybov, L.F. Kulikova, M.G. Mikheev, O.E. Omel'yanovsky, S.A. Kuzmichev, S.N. Tchesnokov, T.E. Shanygina, V.M. Pudalov, Ya.G. Ponomarev, Yu.F. Eltsev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-05-18T10:11:05Z","title":"Study of the Two-Gap Superconductivity in GdO(F)FeAs by ScS-Andreev Spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.4125","kind":"arxiv","version":1},"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":"sha256:425319015e3e64f5300b8c96b3a0158b2f6ef544e56c587fb583f70e027cbf36","target":"record","created_at":"2026-05-18T03:38:32Z","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":"efd72da3ac546a817e7a1ebc5f3672e26e783b34b1233dba8b29cc13ede90f2b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-05-18T10:11:05Z","title_canon_sha256":"af93a0008c6f8dfd3c903b91fc3d6e1dacbf0a278cb85b209a1af49cf697d4ab"},"schema_version":"1.0","source":{"id":"1205.4125","kind":"arxiv","version":1}},"canonical_sha256":"836daa57eba61c66a74faadcfd8fb623fe57db39454189a96e160ae9f721077b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"836daa57eba61c66a74faadcfd8fb623fe57db39454189a96e160ae9f721077b","first_computed_at":"2026-05-18T03:38:32.917771Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:38:32.917771Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1ptcc67PR49YzG8toMcBiCCvpqfKV5HUYzyjTbOAnJZyv2n1mwUAOfxD5OTFvLca2agWUcer5bDeHszQ7j3RBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:38:32.918464Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.4125","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:425319015e3e64f5300b8c96b3a0158b2f6ef544e56c587fb583f70e027cbf36","sha256:51cc9f5dfe09f9c31744f0dd9745990d74273b8dd1e1dc2fd38fd06e056d1ada"],"state_sha256":"fbf660f2879fd837ecd7581d2af0ba94648477e07b6e7330bc6cceda4171a374"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qz1lGemhj8quXhycOz1OrtnhB6xIEHLCaXCNlztFJ28sEf+Ow7hajujev/3XUvydUHOJqJyv16/EkksUf3c1BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T06:50:11.103143Z","bundle_sha256":"f13bb15e98367835bce86c342b49a2d8b8d079b7c89515dc6f3a398497ca8cbb"}}