{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:73SL4VRPRRTZCPK367POJMIVLF","short_pith_number":"pith:73SL4VRP","canonical_record":{"source":{"id":"1210.3481","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-12T11:45:36Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"669fd587b3f0c7bee98f3274c7d1453b29b76fea69307c8839c1d5495e0d8083","abstract_canon_sha256":"0b16f3b037cbd8f9853493d08e7429538331a4582ca877a23d8555b969f92249"},"schema_version":"1.0"},"canonical_sha256":"fee4be562f8c67913d5bf7dee4b1155955afff21966b1e200673f1b33e9137d0","source":{"kind":"arxiv","id":"1210.3481","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.3481","created_at":"2026-05-18T03:16:19Z"},{"alias_kind":"arxiv_version","alias_value":"1210.3481v1","created_at":"2026-05-18T03:16:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.3481","created_at":"2026-05-18T03:16:19Z"},{"alias_kind":"pith_short_12","alias_value":"73SL4VRPRRTZ","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"73SL4VRPRRTZCPK3","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"73SL4VRP","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:73SL4VRPRRTZCPK367POJMIVLF","target":"record","payload":{"canonical_record":{"source":{"id":"1210.3481","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-12T11:45:36Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"669fd587b3f0c7bee98f3274c7d1453b29b76fea69307c8839c1d5495e0d8083","abstract_canon_sha256":"0b16f3b037cbd8f9853493d08e7429538331a4582ca877a23d8555b969f92249"},"schema_version":"1.0"},"canonical_sha256":"fee4be562f8c67913d5bf7dee4b1155955afff21966b1e200673f1b33e9137d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:16:19.167587Z","signature_b64":"jyVHHKbLfkwqz8oWhHxwiPMAJeJfasLfvx6Xw00jyeKFIHv7wlqKf2qHdk4GHDIKp9dkw9puequMp9HZDukvAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fee4be562f8c67913d5bf7dee4b1155955afff21966b1e200673f1b33e9137d0","last_reissued_at":"2026-05-18T03:16:19.166802Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:16:19.166802Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.3481","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":"2026-05-18T03:16:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C30xPkDAQ3C6vjs5GVC5YExIyHswt0+zmUC/OlZK1S2A5jTHe24HMw4J/onfKOlV8tlY4Vdf0oR1BQW5tZGoBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:21:55.043131Z"},"content_sha256":"2d853f405f1abfba31ef8c8437a3139f2a600517c75f2c3791402d872b361b42","schema_version":"1.0","event_id":"sha256:2d853f405f1abfba31ef8c8437a3139f2a600517c75f2c3791402d872b361b42"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:73SL4VRPRRTZCPK367POJMIVLF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Layered pnictide-oxide Na$_2$Ti$_2$Pn$_2$O (Pn=As, Sb): a paradigm for spin density waves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Xun-Wang Yan, Zhong-Yi Lu","submitted_at":"2012-10-12T11:45:36Z","abstract_excerpt":"From the first-principles calculations, we have studied the electronic and magnetic structures of compound Na$_2$Ti$_2$Pn$_2$O (Pn = As or Sb). We find that in the ground state Na$_2$Ti$_2$As$_2$O is a blocked checkerboard antiferromagnetic semiconductor with a small band gap of about 0.15 eV, in contrast, Na$_2$Ti$_2$Sb$_2$O is a bi-collinear antiferromagnetic semimetal, both with a small moment of about 0.5$\\mu_B$ around each Ti atom. We show that there is a strong Fermi surface nesting in Na$_2$Ti$_2$Pn$_2$O. And we verify that the blocked checkerboard and bi-collinear antiferromagnetic sta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.3481","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":""},"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":"2026-05-18T03:16:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ekyvNS/qstVYZAbNGvOpEebkn5Vp2Gc72XB8YsXYKIc3mOxWDOh4BUpljPhwVokqnRrvvbntEodmL0oG9MiKCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T20:21:55.043768Z"},"content_sha256":"28b3c3d7a0995eff8b41542a92d871a3c46e20e8abdb348c2f10431d29c28309","schema_version":"1.0","event_id":"sha256:28b3c3d7a0995eff8b41542a92d871a3c46e20e8abdb348c2f10431d29c28309"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/73SL4VRPRRTZCPK367POJMIVLF/bundle.json","state_url":"https://pith.science/pith/73SL4VRPRRTZCPK367POJMIVLF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/73SL4VRPRRTZCPK367POJMIVLF/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":"2026-05-18T20:21:55Z","links":{"resolver":"https://pith.science/pith/73SL4VRPRRTZCPK367POJMIVLF","bundle":"https://pith.science/pith/73SL4VRPRRTZCPK367POJMIVLF/bundle.json","state":"https://pith.science/pith/73SL4VRPRRTZCPK367POJMIVLF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/73SL4VRPRRTZCPK367POJMIVLF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:73SL4VRPRRTZCPK367POJMIVLF","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":"0b16f3b037cbd8f9853493d08e7429538331a4582ca877a23d8555b969f92249","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-12T11:45:36Z","title_canon_sha256":"669fd587b3f0c7bee98f3274c7d1453b29b76fea69307c8839c1d5495e0d8083"},"schema_version":"1.0","source":{"id":"1210.3481","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.3481","created_at":"2026-05-18T03:16:19Z"},{"alias_kind":"arxiv_version","alias_value":"1210.3481v1","created_at":"2026-05-18T03:16:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.3481","created_at":"2026-05-18T03:16:19Z"},{"alias_kind":"pith_short_12","alias_value":"73SL4VRPRRTZ","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"73SL4VRPRRTZCPK3","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"73SL4VRP","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:28b3c3d7a0995eff8b41542a92d871a3c46e20e8abdb348c2f10431d29c28309","target":"graph","created_at":"2026-05-18T03:16:19Z","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":"From the first-principles calculations, we have studied the electronic and magnetic structures of compound Na$_2$Ti$_2$Pn$_2$O (Pn = As or Sb). We find that in the ground state Na$_2$Ti$_2$As$_2$O is a blocked checkerboard antiferromagnetic semiconductor with a small band gap of about 0.15 eV, in contrast, Na$_2$Ti$_2$Sb$_2$O is a bi-collinear antiferromagnetic semimetal, both with a small moment of about 0.5$\\mu_B$ around each Ti atom. We show that there is a strong Fermi surface nesting in Na$_2$Ti$_2$Pn$_2$O. And we verify that the blocked checkerboard and bi-collinear antiferromagnetic sta","authors_text":"Xun-Wang Yan, Zhong-Yi Lu","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-12T11:45:36Z","title":"Layered pnictide-oxide Na$_2$Ti$_2$Pn$_2$O (Pn=As, Sb): a paradigm for spin density waves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.3481","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":"sha256:2d853f405f1abfba31ef8c8437a3139f2a600517c75f2c3791402d872b361b42","target":"record","created_at":"2026-05-18T03:16:19Z","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":"0b16f3b037cbd8f9853493d08e7429538331a4582ca877a23d8555b969f92249","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-12T11:45:36Z","title_canon_sha256":"669fd587b3f0c7bee98f3274c7d1453b29b76fea69307c8839c1d5495e0d8083"},"schema_version":"1.0","source":{"id":"1210.3481","kind":"arxiv","version":1}},"canonical_sha256":"fee4be562f8c67913d5bf7dee4b1155955afff21966b1e200673f1b33e9137d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fee4be562f8c67913d5bf7dee4b1155955afff21966b1e200673f1b33e9137d0","first_computed_at":"2026-05-18T03:16:19.166802Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:16:19.166802Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jyVHHKbLfkwqz8oWhHxwiPMAJeJfasLfvx6Xw00jyeKFIHv7wlqKf2qHdk4GHDIKp9dkw9puequMp9HZDukvAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:16:19.167587Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.3481","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d853f405f1abfba31ef8c8437a3139f2a600517c75f2c3791402d872b361b42","sha256:28b3c3d7a0995eff8b41542a92d871a3c46e20e8abdb348c2f10431d29c28309"],"state_sha256":"076a4c5a483b9d2ceb6c9223b1ae4d82337682ffd4d4fbc33c9ca0caed05d745"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tdY7tf3YsKnpvwzJKT4QcTJ5xqxk7XJaJwcd+6q2nPmIctWuR+0UELTK5AUQtPvGziZTEgfOQOoYBga48t7HDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T20:21:55.045851Z","bundle_sha256":"4662a902ba857800177298aa5b35cf95cc3f8ef79058b426efbbb115be4ef796"}}