{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:I4PIWBTFCU3NXFHY3VPS53L43F","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":"83c20dda7deaed30b86b08f16cfc04fec681ef8b09a8fcb9391918c8a0e8c71b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-05-04T13:55:35Z","title_canon_sha256":"434d53a1eb32f634d75037bc74dfd00e92080dffafb4e6055a23fdcf688061a3"},"schema_version":"1.0","source":{"id":"1005.0528","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1005.0528","created_at":"2026-05-18T02:07:43Z"},{"alias_kind":"arxiv_version","alias_value":"1005.0528v2","created_at":"2026-05-18T02:07:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1005.0528","created_at":"2026-05-18T02:07:43Z"},{"alias_kind":"pith_short_12","alias_value":"I4PIWBTFCU3N","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"I4PIWBTFCU3NXFHY","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"I4PIWBTF","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:48a23f9d90d9339cc949e2ac18043a8143edb7464076dc866f297a3094572301","target":"graph","created_at":"2026-05-18T02:07:43Z","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":"Compounds of Sr1-xLaxFe2As2 were synthesized by solid state reaction at 1273 K, under pressures of 2 or 3 GPa. The Sr1-xLaxFe2As2 phase was dominant up to x = 0.5, and superconductivity was observed at $x \\ge 0.2$. A maximum critical temperature Tc of 22 K, and a maximum shielding volume fraction of ~70 % were obtained at x = 0.4. This is the first experimental demonstration of electron-doped superconductivity in 122-type iron pnictides, where electrons were doped through aliovalent substitution at the site of the alkaline earth metal. The optimal Tc was slightly higher than that for the Co-do","authors_text":"Hideo Hosono, Osamu Fukunaga, Satoru Matsuishi, Sung-Wng Kim, Toshiyuki Atou, Yoshinori Muraba","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-05-04T13:55:35Z","title":"High Pressure Synthesis of Indirectly electron-doped 122 Iron Superconductor Sr1-xLaxFe2As2 with a maximum Tc = 22 K"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0528","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":"sha256:12749271355d38740b2c973d229fe674d68933b9358509e80776dafab5fadcfc","target":"record","created_at":"2026-05-18T02:07:43Z","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":"83c20dda7deaed30b86b08f16cfc04fec681ef8b09a8fcb9391918c8a0e8c71b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-05-04T13:55:35Z","title_canon_sha256":"434d53a1eb32f634d75037bc74dfd00e92080dffafb4e6055a23fdcf688061a3"},"schema_version":"1.0","source":{"id":"1005.0528","kind":"arxiv","version":2}},"canonical_sha256":"471e8b06651536db94f8dd5f2eed7cd95f1fe41545547424efd150e3019432a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"471e8b06651536db94f8dd5f2eed7cd95f1fe41545547424efd150e3019432a7","first_computed_at":"2026-05-18T02:07:43.047324Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:43.047324Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wQlFDiU+dzP0mosrz7g+4sA8FZXU3w7YjCMzjlyTGaCLigP/m2OR41S4u/QBYRIKkPLjRDki69Rkam0wLLKkCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:43.048031Z","signed_message":"canonical_sha256_bytes"},"source_id":"1005.0528","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12749271355d38740b2c973d229fe674d68933b9358509e80776dafab5fadcfc","sha256:48a23f9d90d9339cc949e2ac18043a8143edb7464076dc866f297a3094572301"],"state_sha256":"898cfc91a2582dcaa13b8d1d74a838fe2387c1d5e987991786042c0ae52441fb"}