{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:T3AQ2FIBYUQX3G525GVNR3CXSN","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":"f183d26bbf854d30146dbb44c6edf673a2bccf6b8e1afadc2c2bf78ee984a76a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-05-16T04:37:17Z","title_canon_sha256":"7d6438df7761d0d2c6a595279aedc325fd4a424de56a376b959327f77b9935a1"},"schema_version":"1.0","source":{"id":"1905.06524","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.06524","created_at":"2026-05-17T23:46:02Z"},{"alias_kind":"arxiv_version","alias_value":"1905.06524v1","created_at":"2026-05-17T23:46:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.06524","created_at":"2026-05-17T23:46:02Z"},{"alias_kind":"pith_short_12","alias_value":"T3AQ2FIBYUQX","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"T3AQ2FIBYUQX3G52","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"T3AQ2FIB","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:08af1503cf0326a7e34d204f35a64dd28495b395edce6ff692865ab883a0692e","target":"graph","created_at":"2026-05-17T23:46:02Z","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 report synthesis, crystal structure and superconductivity in ThCr2Si2-type LaFe2As2 (La122). La122 was synthesized at 960{\\deg}C for 1.5 h under a pressure of 3.4 GPa. An as-synthesized La122 (non-superconductor) had a collapsed tetragonal structure with a short c-axis length of 11.0144(4) {\\AA} as observed in CaFe2As2 under pressure. The collapsed tetragonal transformed into an uncollapsed tetragonal by annealing the as-synthesized La122 at 500{\\deg}C. The c-axis length remarkably extended to 11.7317(4) {\\AA} and superconductivity emerged at 12.1 K in the uncollapsed tetragonal La122. A cy","authors_text":"Akira Iyo, Hiroshi Eisaki, Hiroshi Fujihisa, Izumi Hase, Kenji Kawashima, Shigeyuki Ishida, Yoshito Gotoh, Yoshiyuki Yoshida","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-05-16T04:37:17Z","title":"Superconductivity in Uncollapsed Tetragonal LaFe2As2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.06524","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:cedfdbbea073268709a09e6efbe06a6229dea50f7cd2d21dd7e76a15798b1fea","target":"record","created_at":"2026-05-17T23:46:02Z","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":"f183d26bbf854d30146dbb44c6edf673a2bccf6b8e1afadc2c2bf78ee984a76a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-05-16T04:37:17Z","title_canon_sha256":"7d6438df7761d0d2c6a595279aedc325fd4a424de56a376b959327f77b9935a1"},"schema_version":"1.0","source":{"id":"1905.06524","kind":"arxiv","version":1}},"canonical_sha256":"9ec10d1501c5217d9bbae9aad8ec57936803fe736ba7ce836e4121769cf69612","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9ec10d1501c5217d9bbae9aad8ec57936803fe736ba7ce836e4121769cf69612","first_computed_at":"2026-05-17T23:46:02.026092Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:02.026092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1OKDx6QZ4pCcVIun09j3sP/qgDdO2jkSJFzqfI5Tj7XsSD1GSoZcqYLQ3uiSE99/qGJ1mjfCV7hwsiviqx0dAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:02.026778Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.06524","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cedfdbbea073268709a09e6efbe06a6229dea50f7cd2d21dd7e76a15798b1fea","sha256:08af1503cf0326a7e34d204f35a64dd28495b395edce6ff692865ab883a0692e"],"state_sha256":"67c4b970ca623810d96aeef77c99e971d2bed832a512baa0ff99a360ff1f72da"}