{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:IQZ6OF6OWMMBYUKJFDWTOV3DWW","short_pith_number":"pith:IQZ6OF6O","canonical_record":{"source":{"id":"1305.2705","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-05-13T08:44:18Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"9c43e17fb5129d6f8119e9e63fc30367d33dc0bb5c61e9d99f24c57a36cef08b","abstract_canon_sha256":"f40103cceb74c38bfb68239af571143bf91a3656331044d114dc55f6954f2225"},"schema_version":"1.0"},"canonical_sha256":"4433e717ceb3181c514928ed375763b58497a3203d86060f6d0446b3d50bfa7d","source":{"kind":"arxiv","id":"1305.2705","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.2705","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"1305.2705v2","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.2705","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"IQZ6OF6OWMMB","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IQZ6OF6OWMMBYUKJ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IQZ6OF6O","created_at":"2026-05-18T12:27:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:IQZ6OF6OWMMBYUKJFDWTOV3DWW","target":"record","payload":{"canonical_record":{"source":{"id":"1305.2705","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-05-13T08:44:18Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"9c43e17fb5129d6f8119e9e63fc30367d33dc0bb5c61e9d99f24c57a36cef08b","abstract_canon_sha256":"f40103cceb74c38bfb68239af571143bf91a3656331044d114dc55f6954f2225"},"schema_version":"1.0"},"canonical_sha256":"4433e717ceb3181c514928ed375763b58497a3203d86060f6d0446b3d50bfa7d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:13:45.740669Z","signature_b64":"tL+6M1aXuaBtF4CDhDl8N+w43m8HwxWrXMktF0NgBSBVawsvBt1nzue6KrJ4JVh2dxb5EhFxuvU0LSbB8Lg+Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4433e717ceb3181c514928ed375763b58497a3203d86060f6d0446b3d50bfa7d","last_reissued_at":"2026-05-18T03:13:45.740048Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:13:45.740048Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.2705","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"frxZsjio3Qkb5hBaH4IZb2EfuHpGD6KKVW45UdNyuS1KBPzXz2fx0bywlBFPcc4zzZ7mMuxMMIiHa5ncFHAPDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:56:02.007709Z"},"content_sha256":"d6eac0aea3d8236e71221581aaaaaec131d93e4c87be8d01b01f5a3ff7f409de","schema_version":"1.0","event_id":"sha256:d6eac0aea3d8236e71221581aaaaaec131d93e4c87be8d01b01f5a3ff7f409de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:IQZ6OF6OWMMBYUKJFDWTOV3DWW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simultaneous optimization of spin fluctuations and superconductivity under pressure in an iron-based superconductor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"B. Normand, C. L. Zhang, G. F. Ji, G. T. Tan, J. Dai, J. S. Zhang, Long Ma, Pengcheng Dai, P. Fan, P. S. Wang, Weiqiang Yu, Y. Song","submitted_at":"2013-05-13T08:44:18Z","abstract_excerpt":"We present a high-pressure NMR study of the overdoped iron pnictide superconductor NaFe$_{0.94}$Co$_{0.06}$As. The low-energy antiferromagnetic spin fluctuations in the normal state, manifest as the Curie-Weiss upturn in the spin-lattice relaxation rate $1/^{75}T_1T$, first increase strongly with pressure but fall again at $P > P_{\\rm opt} =$ 2.2 GPa. Neither long-ranged magnetic order nor a structural phase transition is encountered up to 2.5 GPa. The superconducting transition temperature $T_c$ shows a pressure-dependence identical to the spin fluctuations. Our observations demonstrate that "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.2705","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ca0AMYj/xVhANX/v9VUpzfIi88b64U2l0LdjN0JHT6439LfTCpZLB8Nnvj18kGShG0kjPjyxWw4pmjiI2AHqDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:56:02.008396Z"},"content_sha256":"afe09ed8daacabe660d7532f0e2216fc2f73d22c09699a333dd80cfa277616cc","schema_version":"1.0","event_id":"sha256:afe09ed8daacabe660d7532f0e2216fc2f73d22c09699a333dd80cfa277616cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IQZ6OF6OWMMBYUKJFDWTOV3DWW/bundle.json","state_url":"https://pith.science/pith/IQZ6OF6OWMMBYUKJFDWTOV3DWW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IQZ6OF6OWMMBYUKJFDWTOV3DWW/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-28T21:56:02Z","links":{"resolver":"https://pith.science/pith/IQZ6OF6OWMMBYUKJFDWTOV3DWW","bundle":"https://pith.science/pith/IQZ6OF6OWMMBYUKJFDWTOV3DWW/bundle.json","state":"https://pith.science/pith/IQZ6OF6OWMMBYUKJFDWTOV3DWW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IQZ6OF6OWMMBYUKJFDWTOV3DWW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:IQZ6OF6OWMMBYUKJFDWTOV3DWW","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":"f40103cceb74c38bfb68239af571143bf91a3656331044d114dc55f6954f2225","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-05-13T08:44:18Z","title_canon_sha256":"9c43e17fb5129d6f8119e9e63fc30367d33dc0bb5c61e9d99f24c57a36cef08b"},"schema_version":"1.0","source":{"id":"1305.2705","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.2705","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"1305.2705v2","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.2705","created_at":"2026-05-18T03:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"IQZ6OF6OWMMB","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"IQZ6OF6OWMMBYUKJ","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"IQZ6OF6O","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:afe09ed8daacabe660d7532f0e2216fc2f73d22c09699a333dd80cfa277616cc","target":"graph","created_at":"2026-05-18T03:13:45Z","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 present a high-pressure NMR study of the overdoped iron pnictide superconductor NaFe$_{0.94}$Co$_{0.06}$As. The low-energy antiferromagnetic spin fluctuations in the normal state, manifest as the Curie-Weiss upturn in the spin-lattice relaxation rate $1/^{75}T_1T$, first increase strongly with pressure but fall again at $P > P_{\\rm opt} =$ 2.2 GPa. Neither long-ranged magnetic order nor a structural phase transition is encountered up to 2.5 GPa. The superconducting transition temperature $T_c$ shows a pressure-dependence identical to the spin fluctuations. Our observations demonstrate that ","authors_text":"B. Normand, C. L. Zhang, G. F. Ji, G. T. Tan, J. Dai, J. S. Zhang, Long Ma, Pengcheng Dai, P. Fan, P. S. Wang, Weiqiang Yu, Y. Song","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-05-13T08:44:18Z","title":"Simultaneous optimization of spin fluctuations and superconductivity under pressure in an iron-based superconductor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.2705","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:d6eac0aea3d8236e71221581aaaaaec131d93e4c87be8d01b01f5a3ff7f409de","target":"record","created_at":"2026-05-18T03:13:45Z","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":"f40103cceb74c38bfb68239af571143bf91a3656331044d114dc55f6954f2225","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2013-05-13T08:44:18Z","title_canon_sha256":"9c43e17fb5129d6f8119e9e63fc30367d33dc0bb5c61e9d99f24c57a36cef08b"},"schema_version":"1.0","source":{"id":"1305.2705","kind":"arxiv","version":2}},"canonical_sha256":"4433e717ceb3181c514928ed375763b58497a3203d86060f6d0446b3d50bfa7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4433e717ceb3181c514928ed375763b58497a3203d86060f6d0446b3d50bfa7d","first_computed_at":"2026-05-18T03:13:45.740048Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:13:45.740048Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tL+6M1aXuaBtF4CDhDl8N+w43m8HwxWrXMktF0NgBSBVawsvBt1nzue6KrJ4JVh2dxb5EhFxuvU0LSbB8Lg+Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:13:45.740669Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.2705","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6eac0aea3d8236e71221581aaaaaec131d93e4c87be8d01b01f5a3ff7f409de","sha256:afe09ed8daacabe660d7532f0e2216fc2f73d22c09699a333dd80cfa277616cc"],"state_sha256":"f02854e454e0e36d118c9a2576c70fd88557b3f72a4169aa35e3e2d55b0f3a55"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R+DFwmKs7uZYkSuIOzg59LbtMZWNxIvw3/ikxyBFKrl4qUINjjrdqynIuEX9WPZeD07xITUJwOLwNV2rDR2dAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:56:02.012309Z","bundle_sha256":"cb788ff0de773f7df837cdd6ce88985efd6083714e196b00b465965bbef50055"}}