{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:A5PQMJGTZK3ZE6IOBQKSH7JEBK","short_pith_number":"pith:A5PQMJGT","canonical_record":{"source":{"id":"1210.5049","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-18T08:07:09Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"545a7876838f11b8338edca17feea86514ac6d3b806861d3fcecd0afeab59c55","abstract_canon_sha256":"58cb6ccfe25ebffcad4c019a51cdb938166f37df2a79ea9d220bf6c82cb7cd0a"},"schema_version":"1.0"},"canonical_sha256":"075f0624d3cab792790e0c1523fd240aa358039c91938825607fcaff943af155","source":{"kind":"arxiv","id":"1210.5049","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.5049","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"arxiv_version","alias_value":"1210.5049v1","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.5049","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"pith_short_12","alias_value":"A5PQMJGTZK3Z","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"A5PQMJGTZK3ZE6IO","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"A5PQMJGT","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:A5PQMJGTZK3ZE6IOBQKSH7JEBK","target":"record","payload":{"canonical_record":{"source":{"id":"1210.5049","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-18T08:07:09Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"545a7876838f11b8338edca17feea86514ac6d3b806861d3fcecd0afeab59c55","abstract_canon_sha256":"58cb6ccfe25ebffcad4c019a51cdb938166f37df2a79ea9d220bf6c82cb7cd0a"},"schema_version":"1.0"},"canonical_sha256":"075f0624d3cab792790e0c1523fd240aa358039c91938825607fcaff943af155","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:46.758008Z","signature_b64":"5MCT8nIDmor+N1ckAOemaknEnRcRZeQpHNcWjt5Espi4sbeQWGK2ybg1Uat5SPorjZlNgJNs4I7b/GIBbpMWBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"075f0624d3cab792790e0c1523fd240aa358039c91938825607fcaff943af155","last_reissued_at":"2026-05-18T01:53:46.757187Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:46.757187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.5049","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":"2026-05-18T01:53:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nrg4bZi0ZoHIf36HKCSUoMX7QcMyT+TbgG9ZwyWfJsqnsCKphZIMC7OqEKwPrVC+InCpwyLszlnkzG4Ip/z8AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T02:25:55.605274Z"},"content_sha256":"e8084c6fc966db227144aef94e4458df6c7b5476433095e9175416f99c366ee2","schema_version":"1.0","event_id":"sha256:e8084c6fc966db227144aef94e4458df6c7b5476433095e9175416f99c366ee2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:A5PQMJGTZK3ZE6IOBQKSH7JEBK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of Magnetic Exchange in Ferromagnet-Superconductor La2/3Ca1/3MnO3/YBa2Cu3O7 Bilayers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"C. Utfeld, C. Visani, J. A. Duffy, J. Santamaria, J. W. Taylor, M. W. Butchers, S. B. Dugdale, S. R. Giblin, T. Nakamura","submitted_at":"2012-10-18T08:07:09Z","abstract_excerpt":"The existence of coherent magnetic correlations in the normal phase of cuprate high-temperature superconductors has proven difficult to measure directly. Here we report on a study of ferromagnetic-superconductor bilayers of La2/3Ca1/3MnO3/YBa2Cu3O7 (LCMO/YBCO) with varying YBCO layer thicknesses. Using x-ray magnetic circular dichroism, we demonstrate that the ferromagnetic layer induces a Cu magnetic moment in the adjacent high-temperature superconductor. For thin samples, this moment exists at all temperatures below the Curie temperature of the LCMO layer. However, for a YBCO layer thicker t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.5049","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":"2026-05-18T01:53:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lU/5Njbj5g0aMxP10pJlozPkW7mzK97jpLsRuZY+pvp8TzO/n/33wtWK4ALjUsnSOYqT8yLDoyH3n/zDJdy2AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T02:25:55.605838Z"},"content_sha256":"c4269a6a74cdefab984b4ac650febe9b751976fd63a2ba4ad50077d700f67275","schema_version":"1.0","event_id":"sha256:c4269a6a74cdefab984b4ac650febe9b751976fd63a2ba4ad50077d700f67275"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A5PQMJGTZK3ZE6IOBQKSH7JEBK/bundle.json","state_url":"https://pith.science/pith/A5PQMJGTZK3ZE6IOBQKSH7JEBK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A5PQMJGTZK3ZE6IOBQKSH7JEBK/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":"2026-05-30T02:25:55Z","links":{"resolver":"https://pith.science/pith/A5PQMJGTZK3ZE6IOBQKSH7JEBK","bundle":"https://pith.science/pith/A5PQMJGTZK3ZE6IOBQKSH7JEBK/bundle.json","state":"https://pith.science/pith/A5PQMJGTZK3ZE6IOBQKSH7JEBK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A5PQMJGTZK3ZE6IOBQKSH7JEBK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:A5PQMJGTZK3ZE6IOBQKSH7JEBK","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":"58cb6ccfe25ebffcad4c019a51cdb938166f37df2a79ea9d220bf6c82cb7cd0a","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-18T08:07:09Z","title_canon_sha256":"545a7876838f11b8338edca17feea86514ac6d3b806861d3fcecd0afeab59c55"},"schema_version":"1.0","source":{"id":"1210.5049","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.5049","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"arxiv_version","alias_value":"1210.5049v1","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.5049","created_at":"2026-05-18T01:53:46Z"},{"alias_kind":"pith_short_12","alias_value":"A5PQMJGTZK3Z","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"A5PQMJGTZK3ZE6IO","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"A5PQMJGT","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:c4269a6a74cdefab984b4ac650febe9b751976fd63a2ba4ad50077d700f67275","target":"graph","created_at":"2026-05-18T01:53:46Z","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":"The existence of coherent magnetic correlations in the normal phase of cuprate high-temperature superconductors has proven difficult to measure directly. Here we report on a study of ferromagnetic-superconductor bilayers of La2/3Ca1/3MnO3/YBa2Cu3O7 (LCMO/YBCO) with varying YBCO layer thicknesses. Using x-ray magnetic circular dichroism, we demonstrate that the ferromagnetic layer induces a Cu magnetic moment in the adjacent high-temperature superconductor. For thin samples, this moment exists at all temperatures below the Curie temperature of the LCMO layer. However, for a YBCO layer thicker t","authors_text":"C. Utfeld, C. Visani, J. A. Duffy, J. Santamaria, J. W. Taylor, M. W. Butchers, S. B. Dugdale, S. R. Giblin, T. Nakamura","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-18T08:07:09Z","title":"Measurement of Magnetic Exchange in Ferromagnet-Superconductor La2/3Ca1/3MnO3/YBa2Cu3O7 Bilayers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.5049","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:e8084c6fc966db227144aef94e4458df6c7b5476433095e9175416f99c366ee2","target":"record","created_at":"2026-05-18T01:53:46Z","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":"58cb6ccfe25ebffcad4c019a51cdb938166f37df2a79ea9d220bf6c82cb7cd0a","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-10-18T08:07:09Z","title_canon_sha256":"545a7876838f11b8338edca17feea86514ac6d3b806861d3fcecd0afeab59c55"},"schema_version":"1.0","source":{"id":"1210.5049","kind":"arxiv","version":1}},"canonical_sha256":"075f0624d3cab792790e0c1523fd240aa358039c91938825607fcaff943af155","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"075f0624d3cab792790e0c1523fd240aa358039c91938825607fcaff943af155","first_computed_at":"2026-05-18T01:53:46.757187Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:46.757187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5MCT8nIDmor+N1ckAOemaknEnRcRZeQpHNcWjt5Espi4sbeQWGK2ybg1Uat5SPorjZlNgJNs4I7b/GIBbpMWBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:46.758008Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.5049","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8084c6fc966db227144aef94e4458df6c7b5476433095e9175416f99c366ee2","sha256:c4269a6a74cdefab984b4ac650febe9b751976fd63a2ba4ad50077d700f67275"],"state_sha256":"ee55aa2ae6c5619bda42dcd1a8ec1d0b1cc14dd63dd170b906ab5fe3afbfd4b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qSPxYXYP816w/vMtUBjDNoWm8YKs3xGmIhMlrOqmYs6nCxLwdvKLRUWP76OpzQJk4sJDs8R0XByK00PPnX0FCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T02:25:55.608694Z","bundle_sha256":"c0492d73ddcbfb7df8f9efbe29d940e1d298522e2578b7a9f5aaa3b0ab977984"}}