{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:WP76AXOLWRZD5QKJ46QTKRMZD6","short_pith_number":"pith:WP76AXOL","canonical_record":{"source":{"id":"0908.2164","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-15T07:25:45Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"1688d4730ff5258ea198b8571350fde8fe87ece2d15d89c98009e8e7d3440c2e","abstract_canon_sha256":"e4e7d79b393b882e0d41cd5e1392a642e7a38db679f205bf43f5602a6d7656cd"},"schema_version":"1.0"},"canonical_sha256":"b3ffe05dcbb4723ec149e7a13545991f9ad3d1d7841e226bdb3a74c8a186ff0c","source":{"kind":"arxiv","id":"0908.2164","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2164","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2164v1","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2164","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"WP76AXOLWRZD","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WP76AXOLWRZD5QKJ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WP76AXOL","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:WP76AXOLWRZD5QKJ46QTKRMZD6","target":"record","payload":{"canonical_record":{"source":{"id":"0908.2164","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-15T07:25:45Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"1688d4730ff5258ea198b8571350fde8fe87ece2d15d89c98009e8e7d3440c2e","abstract_canon_sha256":"e4e7d79b393b882e0d41cd5e1392a642e7a38db679f205bf43f5602a6d7656cd"},"schema_version":"1.0"},"canonical_sha256":"b3ffe05dcbb4723ec149e7a13545991f9ad3d1d7841e226bdb3a74c8a186ff0c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:33.928042Z","signature_b64":"nv49roa8IHPBS8dw4HSGy9Zbas7nVC7If1lK81uLXigJ8DQ7zvkISeJeDopm1MMa6b4S7F5M5NzOme1PsJEHCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3ffe05dcbb4723ec149e7a13545991f9ad3d1d7841e226bdb3a74c8a186ff0c","last_reissued_at":"2026-05-18T02:12:33.927268Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:33.927268Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0908.2164","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":"2026-05-18T02:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pwvBIjLuCLgoH+QtmpbDP2xG2OpvN1tO03dScnSLut9GhK+dgV3x4nhXaLQ2b0I1JoJ8PLPCy+6l4o27CZnWCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T09:18:40.106647Z"},"content_sha256":"7ee0d63270f5b6b8d2419182d13ff4df941c5fa2ee2649b8c72f21bc86463115","schema_version":"1.0","event_id":"sha256:7ee0d63270f5b6b8d2419182d13ff4df941c5fa2ee2649b8c72f21bc86463115"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:WP76AXOLWRZD5QKJ46QTKRMZD6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thermal-magnetic noise measurement of spin-torque effects on ferromagnetic resonance in MgO-based magnetic tunnel junctions","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Jonathan Z. Sun, Li Gao, Rai Moriya, Stuart S.P. Parkin, Xin Jiang, Yongfeng Guan","submitted_at":"2009-08-15T07:25:45Z","abstract_excerpt":"Thermal-magnetic noise at ferromagnetic resonance (T-FMR) can be used to measure magnetic perpendicular anisotropy of nanoscale magnetic tunnel junctions (MTJs). For this purpose, T-FMR measurements were conducted with an external magnetic field up to 14 kOe applied perpendicular to the film surface of MgO-based MTJs under a dc bias. The observed frequency-field relationship suggests that a 20 A CoFeB free layer has an effective demagnetization field much smaller than the intrinsic bulk value of CoFeB, with 4PiMeff = (6.1 +/- 0.3) kOe. This value is consistent with the saturation field obtaine"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2164","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":"2026-05-18T02:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DHMqF/OhIdd9yrrJc4ipH62GRDuspGpbywQA1UvDECEByT4D+95Yf1eV1v6wxO17Nz6vveK2tn+EW82AYMc6AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T09:18:40.106992Z"},"content_sha256":"ac22fb75cf7edd6207f62c4127ab402fc4617ca51b792b4c8322f99efd0b734d","schema_version":"1.0","event_id":"sha256:ac22fb75cf7edd6207f62c4127ab402fc4617ca51b792b4c8322f99efd0b734d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WP76AXOLWRZD5QKJ46QTKRMZD6/bundle.json","state_url":"https://pith.science/pith/WP76AXOLWRZD5QKJ46QTKRMZD6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WP76AXOLWRZD5QKJ46QTKRMZD6/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":"2026-06-27T09:18:40Z","links":{"resolver":"https://pith.science/pith/WP76AXOLWRZD5QKJ46QTKRMZD6","bundle":"https://pith.science/pith/WP76AXOLWRZD5QKJ46QTKRMZD6/bundle.json","state":"https://pith.science/pith/WP76AXOLWRZD5QKJ46QTKRMZD6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WP76AXOLWRZD5QKJ46QTKRMZD6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:WP76AXOLWRZD5QKJ46QTKRMZD6","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":"e4e7d79b393b882e0d41cd5e1392a642e7a38db679f205bf43f5602a6d7656cd","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-15T07:25:45Z","title_canon_sha256":"1688d4730ff5258ea198b8571350fde8fe87ece2d15d89c98009e8e7d3440c2e"},"schema_version":"1.0","source":{"id":"0908.2164","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.2164","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"0908.2164v1","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.2164","created_at":"2026-05-18T02:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"WP76AXOLWRZD","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WP76AXOLWRZD5QKJ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WP76AXOL","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:ac22fb75cf7edd6207f62c4127ab402fc4617ca51b792b4c8322f99efd0b734d","target":"graph","created_at":"2026-05-18T02:12:33Z","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":"Thermal-magnetic noise at ferromagnetic resonance (T-FMR) can be used to measure magnetic perpendicular anisotropy of nanoscale magnetic tunnel junctions (MTJs). For this purpose, T-FMR measurements were conducted with an external magnetic field up to 14 kOe applied perpendicular to the film surface of MgO-based MTJs under a dc bias. The observed frequency-field relationship suggests that a 20 A CoFeB free layer has an effective demagnetization field much smaller than the intrinsic bulk value of CoFeB, with 4PiMeff = (6.1 +/- 0.3) kOe. This value is consistent with the saturation field obtaine","authors_text":"Jonathan Z. Sun, Li Gao, Rai Moriya, Stuart S.P. Parkin, Xin Jiang, Yongfeng Guan","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-15T07:25:45Z","title":"Thermal-magnetic noise measurement of spin-torque effects on ferromagnetic resonance in MgO-based magnetic tunnel junctions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.2164","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":"sha256:7ee0d63270f5b6b8d2419182d13ff4df941c5fa2ee2649b8c72f21bc86463115","target":"record","created_at":"2026-05-18T02:12:33Z","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":"e4e7d79b393b882e0d41cd5e1392a642e7a38db679f205bf43f5602a6d7656cd","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-08-15T07:25:45Z","title_canon_sha256":"1688d4730ff5258ea198b8571350fde8fe87ece2d15d89c98009e8e7d3440c2e"},"schema_version":"1.0","source":{"id":"0908.2164","kind":"arxiv","version":1}},"canonical_sha256":"b3ffe05dcbb4723ec149e7a13545991f9ad3d1d7841e226bdb3a74c8a186ff0c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3ffe05dcbb4723ec149e7a13545991f9ad3d1d7841e226bdb3a74c8a186ff0c","first_computed_at":"2026-05-18T02:12:33.927268Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:33.927268Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nv49roa8IHPBS8dw4HSGy9Zbas7nVC7If1lK81uLXigJ8DQ7zvkISeJeDopm1MMa6b4S7F5M5NzOme1PsJEHCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:33.928042Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.2164","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7ee0d63270f5b6b8d2419182d13ff4df941c5fa2ee2649b8c72f21bc86463115","sha256:ac22fb75cf7edd6207f62c4127ab402fc4617ca51b792b4c8322f99efd0b734d"],"state_sha256":"713af5d164347e736ff552ce2626ebfa47e72121fdec7bfa5c9fac8603208279"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r5JytWkoK6nDZljMIMs4rSe+KTVWi/jfThZCaIzlYDAo4mGYway328k4BqFflqJkUZfZ6R08hQc5Dn0gaT58CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T09:18:40.108877Z","bundle_sha256":"0c46241fcd86e67b6c8eeb912186317845e589d2ea1e3aec9aa94f298193ae48"}}