{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:DC3BJNT2PKIMLSZEXI62ANIMRW","short_pith_number":"pith:DC3BJNT2","canonical_record":{"source":{"id":"1307.5475","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-20T23:18:04Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"title_canon_sha256":"da55454283b3d90166cf92349227b0c0cc79be54b56c27e4a1fb9808303d2f8b","abstract_canon_sha256":"f94ab6fa2715716abf177decfb0c9a8e235c6cef468d78e91011f5a074f2dc7d"},"schema_version":"1.0"},"canonical_sha256":"18b614b67a7a90c5cb24ba3da0350c8d800754e741d8c5e05bc66ad684e4f9f3","source":{"kind":"arxiv","id":"1307.5475","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.5475","created_at":"2026-05-18T03:05:01Z"},{"alias_kind":"arxiv_version","alias_value":"1307.5475v2","created_at":"2026-05-18T03:05:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.5475","created_at":"2026-05-18T03:05:01Z"},{"alias_kind":"pith_short_12","alias_value":"DC3BJNT2PKIM","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"DC3BJNT2PKIMLSZE","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"DC3BJNT2","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:DC3BJNT2PKIMLSZEXI62ANIMRW","target":"record","payload":{"canonical_record":{"source":{"id":"1307.5475","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-20T23:18:04Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"title_canon_sha256":"da55454283b3d90166cf92349227b0c0cc79be54b56c27e4a1fb9808303d2f8b","abstract_canon_sha256":"f94ab6fa2715716abf177decfb0c9a8e235c6cef468d78e91011f5a074f2dc7d"},"schema_version":"1.0"},"canonical_sha256":"18b614b67a7a90c5cb24ba3da0350c8d800754e741d8c5e05bc66ad684e4f9f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:05:01.294482Z","signature_b64":"nydFXWfW6SdY/fjTxu+Cf1VWyf7De/wjgGk7Co8tpwTV5rFwKS18iHkykf9m/8it3jmp5H5fRqiZM43mv18aBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18b614b67a7a90c5cb24ba3da0350c8d800754e741d8c5e05bc66ad684e4f9f3","last_reissued_at":"2026-05-18T03:05:01.293783Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:05:01.293783Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.5475","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":"2026-05-18T03:05:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B/3cTbV77ZQICAN9NQahTRWqJ9w0EHO7zhfCOhOvSclTSm0VpIyhFSa1Hh/ZvQMB0rFZykj549BlBqFDMxybDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T00:42:03.241411Z"},"content_sha256":"ac04253cf460166d1351092f0e5da8e82506f0ae8e14ed18e84fc40d95a535e0","schema_version":"1.0","event_id":"sha256:ac04253cf460166d1351092f0e5da8e82506f0ae8e14ed18e84fc40d95a535e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:DC3BJNT2PKIMLSZEXI62ANIMRW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Emergent Spin-Filter at the interface between Ferromagnetic and Insulating Layered Oxides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"C. Leon, F. A. Cuellar, J. Santamaria, J. W. Freeland, M. R. Fitzsimmons, S. G. E. te Velthuis, Yaohua Liu, Z. Sefrioui","submitted_at":"2013-07-20T23:18:04Z","abstract_excerpt":"We report a strong effect of interface-induced magnetization on the transport properties of magnetic tunnel junctions consisting of ferromagnetic manganite La$_{0.7}$Ca$_{0.3}$MnO$_{3}$ and insulating cuprate PrBa$_{2}$Cu$_{3}$O$_{7}$. Contrary to the typically observed steady increase of the tunnel magnetoresistance with decreasing temperature, this system exhibits a sudden anomalous decrease at low temperatures. Interestingly, this anomalous behavior can be attributed to the competition between the positive spin polarization of the manganite contacts and the negative spin-filter effect from "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.5475","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":"2026-05-18T03:05:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"slQl3GefI+k7cP6o2SsLMMBL10Of13hcCGkjAKkGhbLU4wZBmiQhLNM96HiwOxcVF4EC423sWd3QPF592c+iDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T00:42:03.241772Z"},"content_sha256":"03abbd91bfb6d7fb9fe8dae4b15460c42a134ed3629688f0a31b358e31abcfb3","schema_version":"1.0","event_id":"sha256:03abbd91bfb6d7fb9fe8dae4b15460c42a134ed3629688f0a31b358e31abcfb3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DC3BJNT2PKIMLSZEXI62ANIMRW/bundle.json","state_url":"https://pith.science/pith/DC3BJNT2PKIMLSZEXI62ANIMRW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DC3BJNT2PKIMLSZEXI62ANIMRW/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":"2026-06-20T00:42:03Z","links":{"resolver":"https://pith.science/pith/DC3BJNT2PKIMLSZEXI62ANIMRW","bundle":"https://pith.science/pith/DC3BJNT2PKIMLSZEXI62ANIMRW/bundle.json","state":"https://pith.science/pith/DC3BJNT2PKIMLSZEXI62ANIMRW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DC3BJNT2PKIMLSZEXI62ANIMRW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DC3BJNT2PKIMLSZEXI62ANIMRW","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":"f94ab6fa2715716abf177decfb0c9a8e235c6cef468d78e91011f5a074f2dc7d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-20T23:18:04Z","title_canon_sha256":"da55454283b3d90166cf92349227b0c0cc79be54b56c27e4a1fb9808303d2f8b"},"schema_version":"1.0","source":{"id":"1307.5475","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.5475","created_at":"2026-05-18T03:05:01Z"},{"alias_kind":"arxiv_version","alias_value":"1307.5475v2","created_at":"2026-05-18T03:05:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.5475","created_at":"2026-05-18T03:05:01Z"},{"alias_kind":"pith_short_12","alias_value":"DC3BJNT2PKIM","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"DC3BJNT2PKIMLSZE","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"DC3BJNT2","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:03abbd91bfb6d7fb9fe8dae4b15460c42a134ed3629688f0a31b358e31abcfb3","target":"graph","created_at":"2026-05-18T03:05:01Z","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 report a strong effect of interface-induced magnetization on the transport properties of magnetic tunnel junctions consisting of ferromagnetic manganite La$_{0.7}$Ca$_{0.3}$MnO$_{3}$ and insulating cuprate PrBa$_{2}$Cu$_{3}$O$_{7}$. Contrary to the typically observed steady increase of the tunnel magnetoresistance with decreasing temperature, this system exhibits a sudden anomalous decrease at low temperatures. Interestingly, this anomalous behavior can be attributed to the competition between the positive spin polarization of the manganite contacts and the negative spin-filter effect from ","authors_text":"C. Leon, F. A. Cuellar, J. Santamaria, J. W. Freeland, M. R. Fitzsimmons, S. G. E. te Velthuis, Yaohua Liu, Z. Sefrioui","cross_cats":["cond-mat.mes-hall","cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-20T23:18:04Z","title":"Emergent Spin-Filter at the interface between Ferromagnetic and Insulating Layered Oxides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.5475","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:ac04253cf460166d1351092f0e5da8e82506f0ae8e14ed18e84fc40d95a535e0","target":"record","created_at":"2026-05-18T03:05:01Z","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":"f94ab6fa2715716abf177decfb0c9a8e235c6cef468d78e91011f5a074f2dc7d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-07-20T23:18:04Z","title_canon_sha256":"da55454283b3d90166cf92349227b0c0cc79be54b56c27e4a1fb9808303d2f8b"},"schema_version":"1.0","source":{"id":"1307.5475","kind":"arxiv","version":2}},"canonical_sha256":"18b614b67a7a90c5cb24ba3da0350c8d800754e741d8c5e05bc66ad684e4f9f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18b614b67a7a90c5cb24ba3da0350c8d800754e741d8c5e05bc66ad684e4f9f3","first_computed_at":"2026-05-18T03:05:01.293783Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:05:01.293783Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nydFXWfW6SdY/fjTxu+Cf1VWyf7De/wjgGk7Co8tpwTV5rFwKS18iHkykf9m/8it3jmp5H5fRqiZM43mv18aBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:05:01.294482Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.5475","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac04253cf460166d1351092f0e5da8e82506f0ae8e14ed18e84fc40d95a535e0","sha256:03abbd91bfb6d7fb9fe8dae4b15460c42a134ed3629688f0a31b358e31abcfb3"],"state_sha256":"8f5902a94603a15d154581c14ecdf69dfbe32e84e1ed9d718d18b179097eee4c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l+Jz7typZ94hzC9AvbKpQA4iA/ebRvSfLibvoCLE4vBs4FtxOjdhJNCEyji6UmNVp9bMLPnKycq99jBh2DpaDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T00:42:03.243891Z","bundle_sha256":"2501d9a4c788b63cf96294391757bcc01271525a17c488b2f6649f9d0ae2b372"}}