{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:BX2J6EODAI2SPNYWYJVG33AVEA","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":"ee8e0bc07686780461f8a8c97151a98fd737b429e61a002ab6b047d9c4c77420","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-04-24T01:35:54Z","title_canon_sha256":"e06714e5f121eda494bd01d0dbe6fcbf6e47fc672975785313003af35436bf5d"},"schema_version":"1.0","source":{"id":"0904.3775","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.3775","created_at":"2026-07-04T15:48:14Z"},{"alias_kind":"arxiv_version","alias_value":"0904.3775v1","created_at":"2026-07-04T15:48:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.3775","created_at":"2026-07-04T15:48:14Z"},{"alias_kind":"pith_short_12","alias_value":"BX2J6EODAI2S","created_at":"2026-07-04T15:48:14Z"},{"alias_kind":"pith_short_16","alias_value":"BX2J6EODAI2SPNYW","created_at":"2026-07-04T15:48:14Z"},{"alias_kind":"pith_short_8","alias_value":"BX2J6EOD","created_at":"2026-07-04T15:48:14Z"}],"graph_snapshots":[{"event_id":"sha256:608d9be26c5bc372b8e70acc9a2ae6362b215fe79743372e430f5ac258184f30","target":"graph","created_at":"2026-07-04T15:48:14Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0904.3775/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use neutron scattering to study magnetic order and spin excitations in BaFe$_{1.96}$Ni$_{0.04}$As$_{2}$. On cooling, the system first changes the lattice symmetry from tetragonal to orthoromhbic near $\\sim$97 K, and then orders antiferromagnetically at $T_N=91$ K before developing weak superconductivity below $\\sim$15 K. Although superconductivity appears to co-exist with static antiferromagnetic order from transport and neutron diffraction measurement, inelastic neutron scattering experiments reveal that magnetic excitations do not respond to superconductivity. Instead, the effect of elect","authors_text":"Astrid Schneidewind, Fang Zhou, Jiangping Hu, Jun Zhao, Leland W. Harriger, Pengcheng Dai, Shiliang Li, Wei Lu, Xiaoli Dong, Zhengcai Li, Zhongxian Zhao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-04-24T01:35:54Z","title":"Effect of electron-doping on spin excitations of underdoped BaFe$_{1.96}$Ni$_{0.04}$As$_{2}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.3775","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":"sha256:6bb76f0ab1bc94a132f5302362699d1972839630589323134ba6a7fc1adcba48","target":"record","created_at":"2026-07-04T15:48:14Z","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":"ee8e0bc07686780461f8a8c97151a98fd737b429e61a002ab6b047d9c4c77420","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-04-24T01:35:54Z","title_canon_sha256":"e06714e5f121eda494bd01d0dbe6fcbf6e47fc672975785313003af35436bf5d"},"schema_version":"1.0","source":{"id":"0904.3775","kind":"arxiv","version":1}},"canonical_sha256":"0df49f11c3023527b716c26a6dec15202fee3f8a5e236bf698acd0eff5a26b33","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0df49f11c3023527b716c26a6dec15202fee3f8a5e236bf698acd0eff5a26b33","first_computed_at":"2026-07-04T15:48:14.730778Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:48:14.730778Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"USaCfNkrxvaOz0BFU3629E+g/gvrwFWtNSqgeBKerXMPUlXW4cSAgfUqPf3Dc8Y4dbU1qTfEq6VGadOs9urADQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:48:14.731192Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.3775","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6bb76f0ab1bc94a132f5302362699d1972839630589323134ba6a7fc1adcba48","sha256:608d9be26c5bc372b8e70acc9a2ae6362b215fe79743372e430f5ac258184f30"],"state_sha256":"01ccaa82219cd0631e5300718890b0ab6ace686871858f69c8e3cec4e24283ea"}