{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:BT6J4QAQD5YYWO35NGQ4YNH7LI","short_pith_number":"pith:BT6J4QAQ","canonical_record":{"source":{"id":"0905.0060","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-05-01T07:40:50Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f98cbd71b1efcddd05de750d731585a620864906c9066b21232b432353abee07","abstract_canon_sha256":"0a64fa5343aa3d2b53951f49047a32d3756b242bc3a8f4d26bbd953c19eaa47c"},"schema_version":"1.0"},"canonical_sha256":"0cfc9e40101f718b3b7d69a1cc34ff5a382fa50d713790a0ba0ab31c6e496c5d","source":{"kind":"arxiv","id":"0905.0060","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0060","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0060v1","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0060","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"BT6J4QAQD5YY","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BT6J4QAQD5YYWO35","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BT6J4QAQ","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:BT6J4QAQD5YYWO35NGQ4YNH7LI","target":"record","payload":{"canonical_record":{"source":{"id":"0905.0060","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-05-01T07:40:50Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f98cbd71b1efcddd05de750d731585a620864906c9066b21232b432353abee07","abstract_canon_sha256":"0a64fa5343aa3d2b53951f49047a32d3756b242bc3a8f4d26bbd953c19eaa47c"},"schema_version":"1.0"},"canonical_sha256":"0cfc9e40101f718b3b7d69a1cc34ff5a382fa50d713790a0ba0ab31c6e496c5d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:48.570784Z","signature_b64":"EospAJhps6kfIVQtFbtayoBSgopPa6PmLsJoH1yTERHZVyYk1nvN3qpHW2tvAmLMwW7Nee0jO2ZAr1Co29fqAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0cfc9e40101f718b3b7d69a1cc34ff5a382fa50d713790a0ba0ab31c6e496c5d","last_reissued_at":"2026-05-18T02:13:48.570088Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:48.570088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.0060","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":"2026-05-18T02:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mWTCygDoDBJtUm5mVyr0iqGYVGPaoWBvLVJS3jYfINs9dShNTnNSyw2IT5gMIQnG7KmJqCl/TAJTfBz0JR7mCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T10:40:56.410229Z"},"content_sha256":"67eb33e6128315dcff8aa5940ce31580fdc920c3e57f468008f747913d1344fc","schema_version":"1.0","event_id":"sha256:67eb33e6128315dcff8aa5940ce31580fdc920c3e57f468008f747913d1344fc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:BT6J4QAQD5YYWO35NGQ4YNH7LI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Finite electric field effects in the large perpendicular magnetic anisotropy surface Pt/Fe/Pt(001)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Masahito Tsujikawa, Tatsuki Oda","submitted_at":"2009-05-01T07:40:50Z","abstract_excerpt":"We have investigated crystalline magnetic anisotropy in the electric field (EF) for the Fe-Pt surface which have a large perpendicular anisotropy, by means of the first-principles approach. The anisotropy is reduced linearly with respect to the inward EF, associated with the induced spin density around the Fe layer. Although the magnetic anisotropy energy (MAE) density reveals the large variation around the atoms, the intrinsic contribution to the MAE is found to mainly come from the Fe layer."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0060","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":"2026-05-18T02:13:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P9RVZM+FGzZT+6OiBiq9ch+72KdTbst9yIRaXPkT2xTbvEKtmxN+Y31e5eUzfQe/YbJyYp8KNQ980fv+9BBWBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T10:40:56.410585Z"},"content_sha256":"b781dfda00df857fd3bd03c6a6a85d4f5cea51ada07156887aee985205c3e81f","schema_version":"1.0","event_id":"sha256:b781dfda00df857fd3bd03c6a6a85d4f5cea51ada07156887aee985205c3e81f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BT6J4QAQD5YYWO35NGQ4YNH7LI/bundle.json","state_url":"https://pith.science/pith/BT6J4QAQD5YYWO35NGQ4YNH7LI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BT6J4QAQD5YYWO35NGQ4YNH7LI/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":"2026-07-04T10:40:56Z","links":{"resolver":"https://pith.science/pith/BT6J4QAQD5YYWO35NGQ4YNH7LI","bundle":"https://pith.science/pith/BT6J4QAQD5YYWO35NGQ4YNH7LI/bundle.json","state":"https://pith.science/pith/BT6J4QAQD5YYWO35NGQ4YNH7LI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BT6J4QAQD5YYWO35NGQ4YNH7LI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:BT6J4QAQD5YYWO35NGQ4YNH7LI","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":"0a64fa5343aa3d2b53951f49047a32d3756b242bc3a8f4d26bbd953c19eaa47c","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-05-01T07:40:50Z","title_canon_sha256":"f98cbd71b1efcddd05de750d731585a620864906c9066b21232b432353abee07"},"schema_version":"1.0","source":{"id":"0905.0060","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0060","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0060v1","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0060","created_at":"2026-05-18T02:13:48Z"},{"alias_kind":"pith_short_12","alias_value":"BT6J4QAQD5YY","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"BT6J4QAQD5YYWO35","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"BT6J4QAQ","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:b781dfda00df857fd3bd03c6a6a85d4f5cea51ada07156887aee985205c3e81f","target":"graph","created_at":"2026-05-18T02:13:48Z","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 have investigated crystalline magnetic anisotropy in the electric field (EF) for the Fe-Pt surface which have a large perpendicular anisotropy, by means of the first-principles approach. The anisotropy is reduced linearly with respect to the inward EF, associated with the induced spin density around the Fe layer. Although the magnetic anisotropy energy (MAE) density reveals the large variation around the atoms, the intrinsic contribution to the MAE is found to mainly come from the Fe layer.","authors_text":"Masahito Tsujikawa, Tatsuki Oda","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-05-01T07:40:50Z","title":"Finite electric field effects in the large perpendicular magnetic anisotropy surface Pt/Fe/Pt(001)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0060","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":"sha256:67eb33e6128315dcff8aa5940ce31580fdc920c3e57f468008f747913d1344fc","target":"record","created_at":"2026-05-18T02:13:48Z","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":"0a64fa5343aa3d2b53951f49047a32d3756b242bc3a8f4d26bbd953c19eaa47c","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-05-01T07:40:50Z","title_canon_sha256":"f98cbd71b1efcddd05de750d731585a620864906c9066b21232b432353abee07"},"schema_version":"1.0","source":{"id":"0905.0060","kind":"arxiv","version":1}},"canonical_sha256":"0cfc9e40101f718b3b7d69a1cc34ff5a382fa50d713790a0ba0ab31c6e496c5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0cfc9e40101f718b3b7d69a1cc34ff5a382fa50d713790a0ba0ab31c6e496c5d","first_computed_at":"2026-05-18T02:13:48.570088Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:48.570088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EospAJhps6kfIVQtFbtayoBSgopPa6PmLsJoH1yTERHZVyYk1nvN3qpHW2tvAmLMwW7Nee0jO2ZAr1Co29fqAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:48.570784Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.0060","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67eb33e6128315dcff8aa5940ce31580fdc920c3e57f468008f747913d1344fc","sha256:b781dfda00df857fd3bd03c6a6a85d4f5cea51ada07156887aee985205c3e81f"],"state_sha256":"339c5301812ea35a539b5df594aaa0855e838647dabdad2d112a7f61c1e4cc1e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hAE7r6l1I0X8+i4EJf0kuNP9Uo20JO1rfqJdjP+pRQNgNAG6rGvXEsXAUhDnsaFfqbbQOBgChqULaswVDA5GCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T10:40:56.412503Z","bundle_sha256":"1434b58118ba2fe87d5b8bce4223edabe9cdfd281bd546c8f5721d0b72ac0b5d"}}