{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:T23MRVXB3G5K5E7EL4FF5ZFCQS","short_pith_number":"pith:T23MRVXB","canonical_record":{"source":{"id":"1505.07306","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-27T13:29:34Z","cross_cats_sorted":[],"title_canon_sha256":"693226c7955c6ea9b6fc9f43f267809595143437b47a7b18c483aa12b52bf30d","abstract_canon_sha256":"e3a397aa09bd08a570561f4d100d4a76f04e43503fa43438359863c1bf6556cd"},"schema_version":"1.0"},"canonical_sha256":"9eb6c8d6e1d9baae93e45f0a5ee4a2849d50d5c88506939d0b1c56e17907688b","source":{"kind":"arxiv","id":"1505.07306","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.07306","created_at":"2026-05-18T01:30:34Z"},{"alias_kind":"arxiv_version","alias_value":"1505.07306v2","created_at":"2026-05-18T01:30:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.07306","created_at":"2026-05-18T01:30:34Z"},{"alias_kind":"pith_short_12","alias_value":"T23MRVXB3G5K","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"T23MRVXB3G5K5E7E","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"T23MRVXB","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:T23MRVXB3G5K5E7EL4FF5ZFCQS","target":"record","payload":{"canonical_record":{"source":{"id":"1505.07306","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-27T13:29:34Z","cross_cats_sorted":[],"title_canon_sha256":"693226c7955c6ea9b6fc9f43f267809595143437b47a7b18c483aa12b52bf30d","abstract_canon_sha256":"e3a397aa09bd08a570561f4d100d4a76f04e43503fa43438359863c1bf6556cd"},"schema_version":"1.0"},"canonical_sha256":"9eb6c8d6e1d9baae93e45f0a5ee4a2849d50d5c88506939d0b1c56e17907688b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:34.557800Z","signature_b64":"aiS5WenbsR0XbFxUGt9i9dRpSXo2YtPqsYU8L04RAZOYPAW2kAbJQe/5aWZt3hgV05U2+KxMJXKDAO374Qg2CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9eb6c8d6e1d9baae93e45f0a5ee4a2849d50d5c88506939d0b1c56e17907688b","last_reissued_at":"2026-05-18T01:30:34.557062Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:34.557062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.07306","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":"2026-05-18T01:30:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lg42IUhLzu0wEL6aAHz3liB7O/LaJujqou+FKdbLjx70PzPQ4eJrO0Bynv0J1xELVqi4cfwNla7JeelrXDC1Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:32:06.089578Z"},"content_sha256":"f5bd4a54635db1c11ff6fc291e9b3a8f3d2fe44c2d9267b738330d2f178a35cf","schema_version":"1.0","event_id":"sha256:f5bd4a54635db1c11ff6fc291e9b3a8f3d2fe44c2d9267b738330d2f178a35cf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:T23MRVXB3G5K5E7EL4FF5ZFCQS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of electronic and magnetic properties and related x-ray absorption spectroscopy of ultrathin Co films on BaTiO$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Chass\\'e, A. Ernst, G. Fischer, I. Mertig, I. V. Maznichenko, M. Geilhufe, M. Hoffmann, S. Ostanin, St. Borek, W. Hergert","submitted_at":"2015-05-27T13:29:34Z","abstract_excerpt":"We present a first-principles study of electronic and magnetic properties of thin Co films on a BaTiO$_3$(001) single crystal. The crystalline structure of 1, 2, and 3 monolayer thick Co films was determined and served as input for calculations of the electronic and magnetic properties of the films. The estimation of exchange constants indicates that the Co films are ferromagnetic with a high critical temperature, which depends on the film thickness and the interface geometry. In addition, we calculated x-ray absorption spectra, related magnetic circular dichroism (XMCD) and linear dichroism ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07306","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":"2026-05-18T01:30:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cR75if03OJapf2wZqS5XWLB9kKgh5fqHEwAzPi+ykipLX7KtBK7YLozPj7oPVD03ijJi1Xng2hDQAX07BCamAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:32:06.090061Z"},"content_sha256":"de465cf8d4f97039613bd4a64adc595c8c96fe49eefab8cd192d74080d76510b","schema_version":"1.0","event_id":"sha256:de465cf8d4f97039613bd4a64adc595c8c96fe49eefab8cd192d74080d76510b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T23MRVXB3G5K5E7EL4FF5ZFCQS/bundle.json","state_url":"https://pith.science/pith/T23MRVXB3G5K5E7EL4FF5ZFCQS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T23MRVXB3G5K5E7EL4FF5ZFCQS/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":"2026-05-25T21:32:06Z","links":{"resolver":"https://pith.science/pith/T23MRVXB3G5K5E7EL4FF5ZFCQS","bundle":"https://pith.science/pith/T23MRVXB3G5K5E7EL4FF5ZFCQS/bundle.json","state":"https://pith.science/pith/T23MRVXB3G5K5E7EL4FF5ZFCQS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T23MRVXB3G5K5E7EL4FF5ZFCQS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:T23MRVXB3G5K5E7EL4FF5ZFCQS","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":"e3a397aa09bd08a570561f4d100d4a76f04e43503fa43438359863c1bf6556cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-27T13:29:34Z","title_canon_sha256":"693226c7955c6ea9b6fc9f43f267809595143437b47a7b18c483aa12b52bf30d"},"schema_version":"1.0","source":{"id":"1505.07306","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.07306","created_at":"2026-05-18T01:30:34Z"},{"alias_kind":"arxiv_version","alias_value":"1505.07306v2","created_at":"2026-05-18T01:30:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.07306","created_at":"2026-05-18T01:30:34Z"},{"alias_kind":"pith_short_12","alias_value":"T23MRVXB3G5K","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"T23MRVXB3G5K5E7E","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"T23MRVXB","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:de465cf8d4f97039613bd4a64adc595c8c96fe49eefab8cd192d74080d76510b","target":"graph","created_at":"2026-05-18T01:30:34Z","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 present a first-principles study of electronic and magnetic properties of thin Co films on a BaTiO$_3$(001) single crystal. The crystalline structure of 1, 2, and 3 monolayer thick Co films was determined and served as input for calculations of the electronic and magnetic properties of the films. The estimation of exchange constants indicates that the Co films are ferromagnetic with a high critical temperature, which depends on the film thickness and the interface geometry. In addition, we calculated x-ray absorption spectra, related magnetic circular dichroism (XMCD) and linear dichroism (","authors_text":"A. Chass\\'e, A. Ernst, G. Fischer, I. Mertig, I. V. Maznichenko, M. Geilhufe, M. Hoffmann, S. Ostanin, St. Borek, W. Hergert","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-27T13:29:34Z","title":"Study of electronic and magnetic properties and related x-ray absorption spectroscopy of ultrathin Co films on BaTiO$_3$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07306","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:f5bd4a54635db1c11ff6fc291e9b3a8f3d2fe44c2d9267b738330d2f178a35cf","target":"record","created_at":"2026-05-18T01:30:34Z","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":"e3a397aa09bd08a570561f4d100d4a76f04e43503fa43438359863c1bf6556cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-27T13:29:34Z","title_canon_sha256":"693226c7955c6ea9b6fc9f43f267809595143437b47a7b18c483aa12b52bf30d"},"schema_version":"1.0","source":{"id":"1505.07306","kind":"arxiv","version":2}},"canonical_sha256":"9eb6c8d6e1d9baae93e45f0a5ee4a2849d50d5c88506939d0b1c56e17907688b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9eb6c8d6e1d9baae93e45f0a5ee4a2849d50d5c88506939d0b1c56e17907688b","first_computed_at":"2026-05-18T01:30:34.557062Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:34.557062Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aiS5WenbsR0XbFxUGt9i9dRpSXo2YtPqsYU8L04RAZOYPAW2kAbJQe/5aWZt3hgV05U2+KxMJXKDAO374Qg2CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:34.557800Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.07306","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5bd4a54635db1c11ff6fc291e9b3a8f3d2fe44c2d9267b738330d2f178a35cf","sha256:de465cf8d4f97039613bd4a64adc595c8c96fe49eefab8cd192d74080d76510b"],"state_sha256":"c3e1c74c90d963f6f8dea914c7e6c123db6f8e50af8364f002f1e491816d33b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2pzvoSr/KjCi9ccicJhktMIFSNo7oJV1n2uh1B8KgJ/8zFzH1HCo2Mlw9ZJGM0EG7g7y2MH0RqOK3G9RNQFKCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:32:06.092863Z","bundle_sha256":"07de4dbed2eb39cd3a21b99eb4ced5d5083575a463e765e86ecb869023a88de6"}}