{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:YQAIYEDOU2OPEU3JSE2BR3TI3M","short_pith_number":"pith:YQAIYEDO","canonical_record":{"source":{"id":"0902.2628","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-02-16T08:40:23Z","cross_cats_sorted":[],"title_canon_sha256":"2aa24bd55909b8cb93d056c8aec61b6c1467fa6c5b0d6963f6baba1f6bf9bb57","abstract_canon_sha256":"64a3822a0e850ae7eb35370811900561fba47741c53475c8ba8c2f3762d26862"},"schema_version":"1.0"},"canonical_sha256":"c4008c106ea69cf25369913418ee68db30da2e21cf2a362761975bceed10db30","source":{"kind":"arxiv","id":"0902.2628","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.2628","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"arxiv_version","alias_value":"0902.2628v1","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.2628","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"pith_short_12","alias_value":"YQAIYEDOU2OP","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"pith_short_16","alias_value":"YQAIYEDOU2OPEU3J","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"pith_short_8","alias_value":"YQAIYEDO","created_at":"2026-07-04T15:46:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:YQAIYEDOU2OPEU3JSE2BR3TI3M","target":"record","payload":{"canonical_record":{"source":{"id":"0902.2628","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-02-16T08:40:23Z","cross_cats_sorted":[],"title_canon_sha256":"2aa24bd55909b8cb93d056c8aec61b6c1467fa6c5b0d6963f6baba1f6bf9bb57","abstract_canon_sha256":"64a3822a0e850ae7eb35370811900561fba47741c53475c8ba8c2f3762d26862"},"schema_version":"1.0"},"canonical_sha256":"c4008c106ea69cf25369913418ee68db30da2e21cf2a362761975bceed10db30","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:46:49.087903Z","signature_b64":"Lw7mNoc8uF/CD/rDaN6W+u9IYpQtXsySxzE138o8b/SvNx+iaMXNyvdgt/Go4mhPugGZ6/yKOWY/5WxbgCerBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4008c106ea69cf25369913418ee68db30da2e21cf2a362761975bceed10db30","last_reissued_at":"2026-07-04T15:46:49.087540Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:46:49.087540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0902.2628","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:46:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"150aDrV3ZeZlXisd4pQtnfER7lFa1DomP8FXOfz/UEYI3cnMTnuA7IJbSYNTeHXQ3vdIiSkINsp483ckZ6JlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T18:18:03.227523Z"},"content_sha256":"2826fc2b3bf84c519d86fdcd1964dfce04f1e418401167691867b16f72cc5d3a","schema_version":"1.0","event_id":"sha256:2826fc2b3bf84c519d86fdcd1964dfce04f1e418401167691867b16f72cc5d3a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:YQAIYEDOU2OPEU3JSE2BR3TI3M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electronic Structure of the BaFe$_2$As$_2$ Family of Iron Pnictides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"D. H. Lu, D. J. Singh, G. F. Chen, I. R. Fisher, J. G. Analytis, J.-H. Chu, J. L. Luo, M. Yi, N. L. Wang, R.-H. He, S.-K. Mo, X. J. Zhou, Z. Hussain, Z.-X. Shen","submitted_at":"2009-02-16T08:40:23Z","abstract_excerpt":"We use high resolution angle-resolved photoemission spectroscopy to study the band structure and Fermi surface topology of the BaFe$_2$As$_2$ iron pnictides. We observe two electron bands and two hole bands near the X-point, $(\\pi,\\pi)$ of the Brillouin zone, in the paramagnetic state for different doping levels, including electron-doped Ba(Co$_{0.06}$Fe$_{0.94}$)$_2$As$_2$, undoped BaFe$_2$As$_2$, and hole-doped Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$. Among these four bands, only the electron bands cross the Fermi level, forming two electron pockets around X, while the hole bands approach but never "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.2628","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0902.2628/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:46:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C0wexrk4ax4OcBNE+cER3cMYFshKQgm1LkRNV5Q9TQuH9aUj05zSNXtqd5vN+xl4Sz5r7wu4CvuYTt551oCvBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T18:18:03.227892Z"},"content_sha256":"f035b492ae258a8f8cb36db8336793c41f759dc0e0ec4427f82626e9e27ba1df","schema_version":"1.0","event_id":"sha256:f035b492ae258a8f8cb36db8336793c41f759dc0e0ec4427f82626e9e27ba1df"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YQAIYEDOU2OPEU3JSE2BR3TI3M/bundle.json","state_url":"https://pith.science/pith/YQAIYEDOU2OPEU3JSE2BR3TI3M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YQAIYEDOU2OPEU3JSE2BR3TI3M/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":"2026-07-21T18:18:03Z","links":{"resolver":"https://pith.science/pith/YQAIYEDOU2OPEU3JSE2BR3TI3M","bundle":"https://pith.science/pith/YQAIYEDOU2OPEU3JSE2BR3TI3M/bundle.json","state":"https://pith.science/pith/YQAIYEDOU2OPEU3JSE2BR3TI3M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YQAIYEDOU2OPEU3JSE2BR3TI3M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:YQAIYEDOU2OPEU3JSE2BR3TI3M","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":"64a3822a0e850ae7eb35370811900561fba47741c53475c8ba8c2f3762d26862","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-02-16T08:40:23Z","title_canon_sha256":"2aa24bd55909b8cb93d056c8aec61b6c1467fa6c5b0d6963f6baba1f6bf9bb57"},"schema_version":"1.0","source":{"id":"0902.2628","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.2628","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"arxiv_version","alias_value":"0902.2628v1","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.2628","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"pith_short_12","alias_value":"YQAIYEDOU2OP","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"pith_short_16","alias_value":"YQAIYEDOU2OPEU3J","created_at":"2026-07-04T15:46:49Z"},{"alias_kind":"pith_short_8","alias_value":"YQAIYEDO","created_at":"2026-07-04T15:46:49Z"}],"graph_snapshots":[{"event_id":"sha256:f035b492ae258a8f8cb36db8336793c41f759dc0e0ec4427f82626e9e27ba1df","target":"graph","created_at":"2026-07-04T15:46:49Z","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/0902.2628/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We use high resolution angle-resolved photoemission spectroscopy to study the band structure and Fermi surface topology of the BaFe$_2$As$_2$ iron pnictides. We observe two electron bands and two hole bands near the X-point, $(\\pi,\\pi)$ of the Brillouin zone, in the paramagnetic state for different doping levels, including electron-doped Ba(Co$_{0.06}$Fe$_{0.94}$)$_2$As$_2$, undoped BaFe$_2$As$_2$, and hole-doped Ba$_{0.6}$K$_{0.4}$Fe$_2$As$_2$. Among these four bands, only the electron bands cross the Fermi level, forming two electron pockets around X, while the hole bands approach but never ","authors_text":"D. H. Lu, D. J. Singh, G. F. Chen, I. R. Fisher, J. G. Analytis, J.-H. Chu, J. L. Luo, M. Yi, N. L. Wang, R.-H. He, S.-K. Mo, X. J. Zhou, Z. Hussain, Z.-X. Shen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-02-16T08:40:23Z","title":"Electronic Structure of the BaFe$_2$As$_2$ Family of Iron Pnictides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.2628","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":"sha256:2826fc2b3bf84c519d86fdcd1964dfce04f1e418401167691867b16f72cc5d3a","target":"record","created_at":"2026-07-04T15:46:49Z","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":"64a3822a0e850ae7eb35370811900561fba47741c53475c8ba8c2f3762d26862","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2009-02-16T08:40:23Z","title_canon_sha256":"2aa24bd55909b8cb93d056c8aec61b6c1467fa6c5b0d6963f6baba1f6bf9bb57"},"schema_version":"1.0","source":{"id":"0902.2628","kind":"arxiv","version":1}},"canonical_sha256":"c4008c106ea69cf25369913418ee68db30da2e21cf2a362761975bceed10db30","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4008c106ea69cf25369913418ee68db30da2e21cf2a362761975bceed10db30","first_computed_at":"2026-07-04T15:46:49.087540Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:46:49.087540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lw7mNoc8uF/CD/rDaN6W+u9IYpQtXsySxzE138o8b/SvNx+iaMXNyvdgt/Go4mhPugGZ6/yKOWY/5WxbgCerBg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:46:49.087903Z","signed_message":"canonical_sha256_bytes"},"source_id":"0902.2628","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2826fc2b3bf84c519d86fdcd1964dfce04f1e418401167691867b16f72cc5d3a","sha256:f035b492ae258a8f8cb36db8336793c41f759dc0e0ec4427f82626e9e27ba1df"],"state_sha256":"0b667f2d8a86744bd2efe45aaddcd9a1412b478cbb5cd980f93e370cac13b2f9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vS8bWIiOvAi2JlSHZclwhMPvpleKhWdVQQJFEf5kaugBXxg6S5hTVHAaKtuZ6MLaycl0aABv3yXpnwCJFj+IDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-21T18:18:03.230058Z","bundle_sha256":"60f93cd11a74229943c3ef44cb75775c308911aad80e4c99f655cae4d8cc32c8"}}