{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:4FGL6KU2CYNLCMJAQOOCAQUXGR","short_pith_number":"pith:4FGL6KU2","canonical_record":{"source":{"id":"cond-mat/0201501","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-01-28T11:04:11Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"9f43d3cdaa98ee0f9a6b30b7c54bf1eb65b00b960c9258eac7bf9485d10eca29","abstract_canon_sha256":"b858bbf74b47094b5d826e65472b067ed252e16b77dc7fb124ffa4b80b5e3b79"},"schema_version":"1.0"},"canonical_sha256":"e14cbf2a9a161ab13120839c20429734716da3be81f1eec889d2c7c78e52bad3","source":{"kind":"arxiv","id":"cond-mat/0201501","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0201501","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0201501v1","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0201501","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"pith_short_12","alias_value":"4FGL6KU2CYNL","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"pith_short_16","alias_value":"4FGL6KU2CYNLCMJA","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"pith_short_8","alias_value":"4FGL6KU2","created_at":"2026-07-04T16:31:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:4FGL6KU2CYNLCMJAQOOCAQUXGR","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0201501","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-01-28T11:04:11Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"9f43d3cdaa98ee0f9a6b30b7c54bf1eb65b00b960c9258eac7bf9485d10eca29","abstract_canon_sha256":"b858bbf74b47094b5d826e65472b067ed252e16b77dc7fb124ffa4b80b5e3b79"},"schema_version":"1.0"},"canonical_sha256":"e14cbf2a9a161ab13120839c20429734716da3be81f1eec889d2c7c78e52bad3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:31:36.653108Z","signature_b64":"dN12WtEerVBdWP3vY79wPB0yBgns4Yxp04oICOvvSbYKV/pXyt4/A7IL3RfzSSK5I0d/3cA7BN5w65ptertABw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e14cbf2a9a161ab13120839c20429734716da3be81f1eec889d2c7c78e52bad3","last_reissued_at":"2026-07-04T16:31:36.652600Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:31:36.652600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0201501","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":"2026-07-04T16:31:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XNo9hrJSp+ZLXxELKi4UeVmCj0KkXZBnsycqSXvW5ZgpgD5t5EwplCD9DMeaxkRtKWnaHs69mCCf4TDXi3cDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T05:59:16.764920Z"},"content_sha256":"f9d30edf3b8b4717e9f4c4b877d5f31a8a4165777cc75e46939c96004826d95e","schema_version":"1.0","event_id":"sha256:f9d30edf3b8b4717e9f4c4b877d5f31a8a4165777cc75e46939c96004826d95e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:4FGL6KU2CYNLCMJAQOOCAQUXGR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anomalous Dispersion of Longitudinal Optical Phonons in $\\mathrm{\\mathbf{Nd_{1.86}Ce_{0.14}CuO_{4+\\bm{\\delta}}}}$ Determined by Inelastic X-ray Scattering","license":"","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"A. Mirone, A. Shukla, F. Sette, M. Braden, M. d'Astuto, M. Greven, M. Krisch, P. Ghigna, P. Giura, P. K. Mang","submitted_at":"2002-01-28T11:04:11Z","abstract_excerpt":"The phonon dispersions of $\\mathrm{Nd_{1.86}Ce_{0.14}CuO_{4+\\delta}}$ along the $[\\xi,0,0]$ direction have been determined by inelastic x-ray scattering. Compared to the undoped parent compound, the two highest longitudinal phonon branches, associated with the Cu-O bond-stretching and out-of-plane oxygen vibration, are shifted to lower energies. Moreover, an anomalous softening of the bond-stretching band is observed around $\\mathbf{q}=(0.2,0,0)$. These signatures provide evidence for strong electron-phonon coupling in this electron-doped high-temperature superconductor."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0201501","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0201501/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:31:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"emi7Qo1W898UqTE+Dpg9OOttB8zU26cj+99c8Tg4QO/TEv+vEvOMTEXNcSO5ljy42f5tcfYAQSLMIHjk5lDtDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T05:59:16.765995Z"},"content_sha256":"9b5689a07339304b8d6d7402d15b506ca1506ac47652bc9cf68d7b9876e31318","schema_version":"1.0","event_id":"sha256:9b5689a07339304b8d6d7402d15b506ca1506ac47652bc9cf68d7b9876e31318"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4FGL6KU2CYNLCMJAQOOCAQUXGR/bundle.json","state_url":"https://pith.science/pith/4FGL6KU2CYNLCMJAQOOCAQUXGR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4FGL6KU2CYNLCMJAQOOCAQUXGR/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":"2026-08-12T05:59:16Z","links":{"resolver":"https://pith.science/pith/4FGL6KU2CYNLCMJAQOOCAQUXGR","bundle":"https://pith.science/pith/4FGL6KU2CYNLCMJAQOOCAQUXGR/bundle.json","state":"https://pith.science/pith/4FGL6KU2CYNLCMJAQOOCAQUXGR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4FGL6KU2CYNLCMJAQOOCAQUXGR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:4FGL6KU2CYNLCMJAQOOCAQUXGR","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":"b858bbf74b47094b5d826e65472b067ed252e16b77dc7fb124ffa4b80b5e3b79","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-01-28T11:04:11Z","title_canon_sha256":"9f43d3cdaa98ee0f9a6b30b7c54bf1eb65b00b960c9258eac7bf9485d10eca29"},"schema_version":"1.0","source":{"id":"cond-mat/0201501","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0201501","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0201501v1","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0201501","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"pith_short_12","alias_value":"4FGL6KU2CYNL","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"pith_short_16","alias_value":"4FGL6KU2CYNLCMJA","created_at":"2026-07-04T16:31:36Z"},{"alias_kind":"pith_short_8","alias_value":"4FGL6KU2","created_at":"2026-07-04T16:31:36Z"}],"graph_snapshots":[{"event_id":"sha256:9b5689a07339304b8d6d7402d15b506ca1506ac47652bc9cf68d7b9876e31318","target":"graph","created_at":"2026-07-04T16:31:36Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/0201501/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The phonon dispersions of $\\mathrm{Nd_{1.86}Ce_{0.14}CuO_{4+\\delta}}$ along the $[\\xi,0,0]$ direction have been determined by inelastic x-ray scattering. Compared to the undoped parent compound, the two highest longitudinal phonon branches, associated with the Cu-O bond-stretching and out-of-plane oxygen vibration, are shifted to lower energies. Moreover, an anomalous softening of the bond-stretching band is observed around $\\mathbf{q}=(0.2,0,0)$. These signatures provide evidence for strong electron-phonon coupling in this electron-doped high-temperature superconductor.","authors_text":"A. Mirone, A. Shukla, F. Sette, M. Braden, M. d'Astuto, M. Greven, M. Krisch, P. Ghigna, P. Giura, P. K. Mang","cross_cats":["cond-mat.str-el"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-01-28T11:04:11Z","title":"Anomalous Dispersion of Longitudinal Optical Phonons in $\\mathrm{\\mathbf{Nd_{1.86}Ce_{0.14}CuO_{4+\\bm{\\delta}}}}$ Determined by Inelastic X-ray Scattering"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0201501","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:f9d30edf3b8b4717e9f4c4b877d5f31a8a4165777cc75e46939c96004826d95e","target":"record","created_at":"2026-07-04T16:31:36Z","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":"b858bbf74b47094b5d826e65472b067ed252e16b77dc7fb124ffa4b80b5e3b79","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-01-28T11:04:11Z","title_canon_sha256":"9f43d3cdaa98ee0f9a6b30b7c54bf1eb65b00b960c9258eac7bf9485d10eca29"},"schema_version":"1.0","source":{"id":"cond-mat/0201501","kind":"arxiv","version":1}},"canonical_sha256":"e14cbf2a9a161ab13120839c20429734716da3be81f1eec889d2c7c78e52bad3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e14cbf2a9a161ab13120839c20429734716da3be81f1eec889d2c7c78e52bad3","first_computed_at":"2026-07-04T16:31:36.652600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:31:36.652600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dN12WtEerVBdWP3vY79wPB0yBgns4Yxp04oICOvvSbYKV/pXyt4/A7IL3RfzSSK5I0d/3cA7BN5w65ptertABw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:31:36.653108Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0201501","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9d30edf3b8b4717e9f4c4b877d5f31a8a4165777cc75e46939c96004826d95e","sha256:9b5689a07339304b8d6d7402d15b506ca1506ac47652bc9cf68d7b9876e31318"],"state_sha256":"2c6aa850ee7981614bf6861160de244f8cfdb714ba64d7c077346cc8e2e0ca0e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TTleReC//O2KZ3xA277Fsqg7C30Y+XSvgjV1LBD8B44g/QR2oX/Q+TxBSnU2LJJKuqE7Pux0tXL11b3C5tp+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T05:59:16.774343Z","bundle_sha256":"f7907e4fc2134ff88f44caeeef58d2a506535297bc3bafdfcfd67d034eda753b"}}