{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GKVGRWR6XGBCGKIMARHANZEZAC","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":"75bb4334edb2255bd1389df2c7bc5965b89e828e5262a58bed84d047c8339e6c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-23T09:01:11Z","title_canon_sha256":"c17d73c61da5f3ce03f73a0b1040c55e2739684f8335a905939eba5a5d43bfcf"},"schema_version":"1.0","source":{"id":"1507.06417","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.06417","created_at":"2026-05-18T01:36:25Z"},{"alias_kind":"arxiv_version","alias_value":"1507.06417v1","created_at":"2026-05-18T01:36:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.06417","created_at":"2026-05-18T01:36:25Z"},{"alias_kind":"pith_short_12","alias_value":"GKVGRWR6XGBC","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GKVGRWR6XGBCGKIM","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GKVGRWR6","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:eb750f1285bf5c8252621ba6e2967ad38c861d893e5cc83f2b330dfe132100ee","target":"graph","created_at":"2026-05-18T01:36:25Z","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":"Low-temperature specific heat (SH) is measured on the postannealed Ba(Fe_{1-x}Ni_x)_2As_2 single crystal with x = 0.058 under different magnetic fields. The sample locates on the overdoped sides and the critical transition temperature is determined to be 14.8 K by both the magnetization and SH measurements. A simple and reliable analysis shows that, besides the phonon and normal electronic contributions, a clear T2 termemerges in the low temperature SH data.Our observation is similar to that observed in the Co-doped system in our previous work and is consistent with the theoretical prediction ","authors_text":"Bo Gao, Gang Mu, Jiazhen Wu, Jingtao Xu, Katsumi Tanigaki, Xiaoming Xie, Yoichi Tanabe","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-23T09:01:11Z","title":"Gap Structure of the Overdoped Iron-Pnictide Superconductor Ba(Fe$_{0.942}$Ni$_{0.058}$)$_{2}$As$_{2}$: A Low-Temperature Specific-Heat Study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.06417","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":"sha256:3eaf6b810fc43d2972bc5e148e5f63896fae93ca0d87c08361c6e9585114142c","target":"record","created_at":"2026-05-18T01:36:25Z","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":"75bb4334edb2255bd1389df2c7bc5965b89e828e5262a58bed84d047c8339e6c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-07-23T09:01:11Z","title_canon_sha256":"c17d73c61da5f3ce03f73a0b1040c55e2739684f8335a905939eba5a5d43bfcf"},"schema_version":"1.0","source":{"id":"1507.06417","kind":"arxiv","version":1}},"canonical_sha256":"32aa68da3eb98223290c044e06e499008a53df1643c94a79eaeb6d50d573a64b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32aa68da3eb98223290c044e06e499008a53df1643c94a79eaeb6d50d573a64b","first_computed_at":"2026-05-18T01:36:25.000085Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:25.000085Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+5rEWPKXXEZZZH0jWwIF4/o2r7Do8KLkm5HcGeUgxlVs8fHJja+3Qzt4IrLG0aUipLaPjB+QATPBJdbzrX3kCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:25.000531Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.06417","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3eaf6b810fc43d2972bc5e148e5f63896fae93ca0d87c08361c6e9585114142c","sha256:eb750f1285bf5c8252621ba6e2967ad38c861d893e5cc83f2b330dfe132100ee"],"state_sha256":"3a128ad379520fff06158e54c7c8d3a7dadd3d85d571d8626a1d50c129d2869b"}