{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JFPSAMEL5NQLRFWUEB2UO2H2VG","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":"5bde4c8e4cfe746d30ad5d1c04612b3b8ab86693a66fb6638b4960f210d7e951","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-02-16T23:49:22Z","title_canon_sha256":"265152c786fc3295348014ad0ecfd5f77e32d8a120b1567b5f52c8187739b72c"},"schema_version":"1.0","source":{"id":"1802.06160","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.06160","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"arxiv_version","alias_value":"1802.06160v1","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.06160","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"pith_short_12","alias_value":"JFPSAMEL5NQL","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JFPSAMEL5NQLRFWU","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JFPSAMEL","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:70c4d3cd620bd1262a58af29a1910f434d7957d68ebc489532080173fe35daa9","target":"graph","created_at":"2026-05-18T00:23:04Z","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":"The effect of $\\alpha$-particle irradiation on a NdFeAs(O,F) thin film has been investigated to determine how the introduction of defects affects basic superconducting properties, including the critical temperature $T_c$ and the upper critical field $H_{c2}$, and properties more of interest for applications, like the critical current density $J_c$ and the related pinning landscape. The irradiation-induced suppression of the film $T_c$ is significantly smaller than on a similarly damaged single crystal. Moreover $H_{c2}$ behaves differently, depending on the field orientation: for H//c the $H_{","authors_text":"C. Tarantini, D. C. Larbalestier, H. Ikuta, K. Iida, M. Chihara, N. Newman, N. Sumiya, R. K. Singh, T. Hatano","cross_cats":["cond-mat.mtrl-sci","physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-02-16T23:49:22Z","title":"Effect of $\\alpha$-particle irradiation on a NdFeAs(O,F) thin film"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.06160","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":"sha256:90acaf46a7c4726673748a44dcfcf50c0ce94cb40e772934c84943d060475499","target":"record","created_at":"2026-05-18T00:23:04Z","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":"5bde4c8e4cfe746d30ad5d1c04612b3b8ab86693a66fb6638b4960f210d7e951","cross_cats_sorted":["cond-mat.mtrl-sci","physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2018-02-16T23:49:22Z","title_canon_sha256":"265152c786fc3295348014ad0ecfd5f77e32d8a120b1567b5f52c8187739b72c"},"schema_version":"1.0","source":{"id":"1802.06160","kind":"arxiv","version":1}},"canonical_sha256":"495f20308beb60b896d420754768faa98e42b3488c5f38254be1dba03b609b45","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"495f20308beb60b896d420754768faa98e42b3488c5f38254be1dba03b609b45","first_computed_at":"2026-05-18T00:23:04.258538Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:23:04.258538Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Uic1/mynoBipqBUX0Mpl8+sTxsCGkE/yskMILqzCQnSa+FCeL5D8AjyI/wPnqrGYAUPV70TG/FrU/8x8AjnxCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:23:04.259347Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.06160","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90acaf46a7c4726673748a44dcfcf50c0ce94cb40e772934c84943d060475499","sha256:70c4d3cd620bd1262a58af29a1910f434d7957d68ebc489532080173fe35daa9"],"state_sha256":"e7cded0f90245c3414de1eb724bd59710476dfb1cee5ce65b1570b2a5199704b"}