{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:LH7Y5HRZKZZNOVT7NJGW3MSUSY","short_pith_number":"pith:LH7Y5HRZ","canonical_record":{"source":{"id":"1501.01148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-01-06T11:28:35Z","cross_cats_sorted":[],"title_canon_sha256":"53d49a253ded35b7a5f44e140595061110f94b09dc05d2971f47f98c73976eac","abstract_canon_sha256":"9a42e9b024cce5e66a0e3f1233b8777df4dfe6aea495774f563c81e3df21aa8c"},"schema_version":"1.0"},"canonical_sha256":"59ff8e9e395672d7567f6a4d6db2549611f544f2b36d88d1a55d2a4dc53a6009","source":{"kind":"arxiv","id":"1501.01148","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.01148","created_at":"2026-05-18T01:10:41Z"},{"alias_kind":"arxiv_version","alias_value":"1501.01148v2","created_at":"2026-05-18T01:10:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.01148","created_at":"2026-05-18T01:10:41Z"},{"alias_kind":"pith_short_12","alias_value":"LH7Y5HRZKZZN","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LH7Y5HRZKZZNOVT7","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LH7Y5HRZ","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:LH7Y5HRZKZZNOVT7NJGW3MSUSY","target":"record","payload":{"canonical_record":{"source":{"id":"1501.01148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-01-06T11:28:35Z","cross_cats_sorted":[],"title_canon_sha256":"53d49a253ded35b7a5f44e140595061110f94b09dc05d2971f47f98c73976eac","abstract_canon_sha256":"9a42e9b024cce5e66a0e3f1233b8777df4dfe6aea495774f563c81e3df21aa8c"},"schema_version":"1.0"},"canonical_sha256":"59ff8e9e395672d7567f6a4d6db2549611f544f2b36d88d1a55d2a4dc53a6009","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:41.394618Z","signature_b64":"Yrue0ib/K2mXgonfKsufUEapefu5mbeUOWdmoD2hu9OcFFBrdN5Q7Ymf8ZfeOUTxsWVTijU8NZGH4nDrplIRCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59ff8e9e395672d7567f6a4d6db2549611f544f2b36d88d1a55d2a4dc53a6009","last_reissued_at":"2026-05-18T01:10:41.394154Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:41.394154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.01148","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":"2026-05-18T01:10:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DRKHyylVL1jFkR5TtGaAbdv51FmTR0+e2RFvN2b/h6A1ts5nb/f7skamjDsEctpU2ZJQTZQthqeHrxOdgbnCCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:40:16.946810Z"},"content_sha256":"70ccc2ca50a4eca8fd3d8e025ea535c5fbab28a78aaae52d44213e45bb84fd1f","schema_version":"1.0","event_id":"sha256:70ccc2ca50a4eca8fd3d8e025ea535c5fbab28a78aaae52d44213e45bb84fd1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:LH7Y5HRZKZZNOVT7NJGW3MSUSY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin excitations used to probe the nature of the exchange coupling in the magnetically ordered ground state of Pr$_{0.5}$Ca$_{0.5}$MnO$_{3}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"D. L. Abernathy, O. Sikora, R. A. Ewings, T. G. Perring, Y. Tokura, Y. Tomioka","submitted_at":"2015-01-06T11:28:35Z","abstract_excerpt":"We have used time-of-flight inelastic neutron scattering to measure the spin wave spectrum of the canonical half-doped manganite Pr$_{0.5}$Ca$_{0.5}$MnO$_{3}$, in its magnetic and orbitally ordered phase. The data, which cover multiple Brillouin zones and the entire energy range of the excitations, are compared with several different models that are all consistent with the CE-type magnetic order, but arise through different exchange coupling schemes. The Goodenough model, i.e. an ordered state comprising strong nearest neighbor ferromagnetic interactions along zig-zag chains with antiferromagn"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.01148","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":"2026-05-18T01:10:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mI1H82Oa3GSbAryMvkxHZkqFrUoRt7GSkmkO8Yqlu3Jf/t7MK4F9XImf8XJZU9c05cr1xx0az+bEPs8Eg5RuCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:40:16.947395Z"},"content_sha256":"799e67cfc59160d94dff0905597a9a94aae1b08eb7f4b23b72206268768b93da","schema_version":"1.0","event_id":"sha256:799e67cfc59160d94dff0905597a9a94aae1b08eb7f4b23b72206268768b93da"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LH7Y5HRZKZZNOVT7NJGW3MSUSY/bundle.json","state_url":"https://pith.science/pith/LH7Y5HRZKZZNOVT7NJGW3MSUSY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LH7Y5HRZKZZNOVT7NJGW3MSUSY/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":"2026-06-07T10:40:16Z","links":{"resolver":"https://pith.science/pith/LH7Y5HRZKZZNOVT7NJGW3MSUSY","bundle":"https://pith.science/pith/LH7Y5HRZKZZNOVT7NJGW3MSUSY/bundle.json","state":"https://pith.science/pith/LH7Y5HRZKZZNOVT7NJGW3MSUSY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LH7Y5HRZKZZNOVT7NJGW3MSUSY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LH7Y5HRZKZZNOVT7NJGW3MSUSY","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":"9a42e9b024cce5e66a0e3f1233b8777df4dfe6aea495774f563c81e3df21aa8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-01-06T11:28:35Z","title_canon_sha256":"53d49a253ded35b7a5f44e140595061110f94b09dc05d2971f47f98c73976eac"},"schema_version":"1.0","source":{"id":"1501.01148","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.01148","created_at":"2026-05-18T01:10:41Z"},{"alias_kind":"arxiv_version","alias_value":"1501.01148v2","created_at":"2026-05-18T01:10:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.01148","created_at":"2026-05-18T01:10:41Z"},{"alias_kind":"pith_short_12","alias_value":"LH7Y5HRZKZZN","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LH7Y5HRZKZZNOVT7","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LH7Y5HRZ","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:799e67cfc59160d94dff0905597a9a94aae1b08eb7f4b23b72206268768b93da","target":"graph","created_at":"2026-05-18T01:10:41Z","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 used time-of-flight inelastic neutron scattering to measure the spin wave spectrum of the canonical half-doped manganite Pr$_{0.5}$Ca$_{0.5}$MnO$_{3}$, in its magnetic and orbitally ordered phase. The data, which cover multiple Brillouin zones and the entire energy range of the excitations, are compared with several different models that are all consistent with the CE-type magnetic order, but arise through different exchange coupling schemes. The Goodenough model, i.e. an ordered state comprising strong nearest neighbor ferromagnetic interactions along zig-zag chains with antiferromagn","authors_text":"D. L. Abernathy, O. Sikora, R. A. Ewings, T. G. Perring, Y. Tokura, Y. Tomioka","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-01-06T11:28:35Z","title":"Spin excitations used to probe the nature of the exchange coupling in the magnetically ordered ground state of Pr$_{0.5}$Ca$_{0.5}$MnO$_{3}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.01148","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":"sha256:70ccc2ca50a4eca8fd3d8e025ea535c5fbab28a78aaae52d44213e45bb84fd1f","target":"record","created_at":"2026-05-18T01:10:41Z","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":"9a42e9b024cce5e66a0e3f1233b8777df4dfe6aea495774f563c81e3df21aa8c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-01-06T11:28:35Z","title_canon_sha256":"53d49a253ded35b7a5f44e140595061110f94b09dc05d2971f47f98c73976eac"},"schema_version":"1.0","source":{"id":"1501.01148","kind":"arxiv","version":2}},"canonical_sha256":"59ff8e9e395672d7567f6a4d6db2549611f544f2b36d88d1a55d2a4dc53a6009","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59ff8e9e395672d7567f6a4d6db2549611f544f2b36d88d1a55d2a4dc53a6009","first_computed_at":"2026-05-18T01:10:41.394154Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:41.394154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yrue0ib/K2mXgonfKsufUEapefu5mbeUOWdmoD2hu9OcFFBrdN5Q7Ymf8ZfeOUTxsWVTijU8NZGH4nDrplIRCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:41.394618Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.01148","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:70ccc2ca50a4eca8fd3d8e025ea535c5fbab28a78aaae52d44213e45bb84fd1f","sha256:799e67cfc59160d94dff0905597a9a94aae1b08eb7f4b23b72206268768b93da"],"state_sha256":"4d68fdb9a8666bfbc8eed4d2005fa94af7c07e02f065fe85579f1505420837f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QCEGncwYGJ8ddPAy5DXOboQGFhgYhYewkCyD5FMPg0SiXO23tHLGQg3CYFFT+SzVXb5XPiodeAaoO5UO8gAnAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T10:40:16.950474Z","bundle_sha256":"51991ae7c0c840d601d97e191000c4a9e237a53a654d0f2784bf20674556464f"}}