{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:SRI5NLNE2LGZT2THXSI47SMZLR","short_pith_number":"pith:SRI5NLNE","canonical_record":{"source":{"id":"0810.5216","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-10-29T08:36:44Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"232890ee4bd3f71b24df8915fbf9bb41b689698e3f71ddd54bf02c6112a0d84f","abstract_canon_sha256":"6763c661308784e593845f4edc304d6c6e1f90add52ec54d99db12195ddd17df"},"schema_version":"1.0"},"canonical_sha256":"9451d6ada4d2cd99ea67bc91cfc9995c6dd39cbf33630c3bfc5b343965fcd58f","source":{"kind":"arxiv","id":"0810.5216","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.5216","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"arxiv_version","alias_value":"0810.5216v2","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.5216","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"pith_short_12","alias_value":"SRI5NLNE2LGZ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"SRI5NLNE2LGZT2TH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"SRI5NLNE","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:SRI5NLNE2LGZT2THXSI47SMZLR","target":"record","payload":{"canonical_record":{"source":{"id":"0810.5216","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-10-29T08:36:44Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"232890ee4bd3f71b24df8915fbf9bb41b689698e3f71ddd54bf02c6112a0d84f","abstract_canon_sha256":"6763c661308784e593845f4edc304d6c6e1f90add52ec54d99db12195ddd17df"},"schema_version":"1.0"},"canonical_sha256":"9451d6ada4d2cd99ea67bc91cfc9995c6dd39cbf33630c3bfc5b343965fcd58f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:41.629629Z","signature_b64":"dmYhXv+IZMl/R5Fs0odI2VQu3lgPnMHMipGZjpfA6x+P3zmaoB5kzOCx8MB+A/e1PHqmOT9g1E/++lilcMoVDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9451d6ada4d2cd99ea67bc91cfc9995c6dd39cbf33630c3bfc5b343965fcd58f","last_reissued_at":"2026-05-18T04:31:41.628955Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:41.628955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0810.5216","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":"2026-05-18T04:31:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bavYMTVnXnAlDDCVGt9WPozGa+poPew7PzuW2aZw+jldHK+xA3tIGwcb5i2rvylW/Sx/ro+BnJLsLR3OVY4zCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:50:57.628939Z"},"content_sha256":"4756d980e4c6ae578f7b6aeecd17d055e227224a82ed6e45aa7174d863121d6b","schema_version":"1.0","event_id":"sha256:4756d980e4c6ae578f7b6aeecd17d055e227224a82ed6e45aa7174d863121d6b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:SRI5NLNE2LGZT2THXSI47SMZLR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Calculated Magnetic Exchange Interactions in High-Temeprature Superconductors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"Sergej Y. Savrasov, Thomas A. Maier, Xiangang Wan","submitted_at":"2008-10-29T08:36:44Z","abstract_excerpt":"Using a first principles linear response approach, we study the magnetic exchange interactions J for a series of superconducting cuprates. We reproduce the observed spin-wave dispersions together with other experimental trends, and show that different cuprates have similar J's regardless their T$_{c}$. The nearest neighbor J is not sensitive to the hole-doping, which agrees with recent experiments. For the undoped cuprates, the second nearest neighbor J is ferromagnetic, but changes its sign with hole-doping. We also find that, in contrast to the hopping integral, the exchange interaction is n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.5216","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":"2026-05-18T04:31:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hv6K5qo9QmShxutDf0Azprs8nLfl/gW+WDrHyHY1BXVRGXvTEwMmyzcoN1Ie27+LxBOJQJ5jy1z4EenvQ9lDBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T17:50:57.629291Z"},"content_sha256":"7c1524a9509d2b5d194d976c6ac0568f8a1f765dda2911301c351ee8a0ba76c7","schema_version":"1.0","event_id":"sha256:7c1524a9509d2b5d194d976c6ac0568f8a1f765dda2911301c351ee8a0ba76c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SRI5NLNE2LGZT2THXSI47SMZLR/bundle.json","state_url":"https://pith.science/pith/SRI5NLNE2LGZT2THXSI47SMZLR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SRI5NLNE2LGZT2THXSI47SMZLR/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":"2026-06-02T17:50:57Z","links":{"resolver":"https://pith.science/pith/SRI5NLNE2LGZT2THXSI47SMZLR","bundle":"https://pith.science/pith/SRI5NLNE2LGZT2THXSI47SMZLR/bundle.json","state":"https://pith.science/pith/SRI5NLNE2LGZT2THXSI47SMZLR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SRI5NLNE2LGZT2THXSI47SMZLR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:SRI5NLNE2LGZT2THXSI47SMZLR","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":"6763c661308784e593845f4edc304d6c6e1f90add52ec54d99db12195ddd17df","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-10-29T08:36:44Z","title_canon_sha256":"232890ee4bd3f71b24df8915fbf9bb41b689698e3f71ddd54bf02c6112a0d84f"},"schema_version":"1.0","source":{"id":"0810.5216","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.5216","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"arxiv_version","alias_value":"0810.5216v2","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.5216","created_at":"2026-05-18T04:31:41Z"},{"alias_kind":"pith_short_12","alias_value":"SRI5NLNE2LGZ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"SRI5NLNE2LGZT2TH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"SRI5NLNE","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:7c1524a9509d2b5d194d976c6ac0568f8a1f765dda2911301c351ee8a0ba76c7","target":"graph","created_at":"2026-05-18T04:31:41Z","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":"Using a first principles linear response approach, we study the magnetic exchange interactions J for a series of superconducting cuprates. We reproduce the observed spin-wave dispersions together with other experimental trends, and show that different cuprates have similar J's regardless their T$_{c}$. The nearest neighbor J is not sensitive to the hole-doping, which agrees with recent experiments. For the undoped cuprates, the second nearest neighbor J is ferromagnetic, but changes its sign with hole-doping. We also find that, in contrast to the hopping integral, the exchange interaction is n","authors_text":"Sergej Y. Savrasov, Thomas A. Maier, Xiangang Wan","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-10-29T08:36:44Z","title":"Calculated Magnetic Exchange Interactions in High-Temeprature Superconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.5216","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":"sha256:4756d980e4c6ae578f7b6aeecd17d055e227224a82ed6e45aa7174d863121d6b","target":"record","created_at":"2026-05-18T04:31:41Z","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":"6763c661308784e593845f4edc304d6c6e1f90add52ec54d99db12195ddd17df","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2008-10-29T08:36:44Z","title_canon_sha256":"232890ee4bd3f71b24df8915fbf9bb41b689698e3f71ddd54bf02c6112a0d84f"},"schema_version":"1.0","source":{"id":"0810.5216","kind":"arxiv","version":2}},"canonical_sha256":"9451d6ada4d2cd99ea67bc91cfc9995c6dd39cbf33630c3bfc5b343965fcd58f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9451d6ada4d2cd99ea67bc91cfc9995c6dd39cbf33630c3bfc5b343965fcd58f","first_computed_at":"2026-05-18T04:31:41.628955Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:41.628955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dmYhXv+IZMl/R5Fs0odI2VQu3lgPnMHMipGZjpfA6x+P3zmaoB5kzOCx8MB+A/e1PHqmOT9g1E/++lilcMoVDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:41.629629Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.5216","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4756d980e4c6ae578f7b6aeecd17d055e227224a82ed6e45aa7174d863121d6b","sha256:7c1524a9509d2b5d194d976c6ac0568f8a1f765dda2911301c351ee8a0ba76c7"],"state_sha256":"786589dc41c99c5e4e1d4982a6f96d91dc2d6e1f24949909687df4929244704b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VAq8RZWQTzBhAX/KSQVvJuoEKDgr1KROPqJltY7VnOZhiTDHwDidOdFA0TXFCAnfoXkkRSS1OtM5ASE4OuONBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T17:50:57.631272Z","bundle_sha256":"1e238df6d47dbf3aae23258b64fc5afcc6db067e964c48962d175feb97ce8df9"}}