{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1999:NUUROEFLRQNJVI2QIQPRJIBFJX","short_pith_number":"pith:NUUROEFL","schema_version":"1.0","canonical_sha256":"6d291710ab8c1a9aa350441f14a0254dd153a7438a311b0214b9633b8268e943","source":{"kind":"arxiv","id":"cond-mat/9908217","version":1},"attestation_state":"computed","paper":{"title":"Structural instability associated with the tilting of CuO6 octahedra in La2-xSrxCuO4","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C. H. Lee, G. Shirane, H. Kimura, K. Hirota, K. Yamada","submitted_at":"1999-08-16T07:40:26Z","abstract_excerpt":"Comprehensive inelastic neutron-scattering measurements were performed to study the soft optical phonons in La2-xSrxCuO4 at x=0.10, 0.12 and 0.18. We found at x=0.18 that the softening of Z-point phonon, suggesting incipient structural transition from the low-temperature orthorhombic (LTO) to low-temperature tetragonal (LTT) phase, breaks at Tc, which is consistent with the previous report by Lee et al. for the optimally doped x=0.15 sample. As for x=0.10 and 0.12, on the other hand, the softening continues even below Tc. It is thus clarified that the breaking of soft phonon is characteristic "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"cond-mat/9908217","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"1999-08-16T07:40:26Z","cross_cats_sorted":[],"title_canon_sha256":"a77b6e71c30597fa097f494b94fc63d9518817b2c4f4f12f93b7086cd250bdea","abstract_canon_sha256":"f4649272ba873276186960ff99a4d511c4a7b55173d294d52a8fe626e91cab0d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:13:10.031472Z","signature_b64":"q0d/MfNxVWeuUi84v4s7bKqCKPFoLbs7D7MR2w2I8OllKBwaPZ2A/Xoes9yhd7Oi4JMUpnj6Co2idDauxjcOAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d291710ab8c1a9aa350441f14a0254dd153a7438a311b0214b9633b8268e943","last_reissued_at":"2026-07-04T16:13:10.031064Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:13:10.031064Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Structural instability associated with the tilting of CuO6 octahedra in La2-xSrxCuO4","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"C. H. Lee, G. Shirane, H. Kimura, K. Hirota, K. Yamada","submitted_at":"1999-08-16T07:40:26Z","abstract_excerpt":"Comprehensive inelastic neutron-scattering measurements were performed to study the soft optical phonons in La2-xSrxCuO4 at x=0.10, 0.12 and 0.18. We found at x=0.18 that the softening of Z-point phonon, suggesting incipient structural transition from the low-temperature orthorhombic (LTO) to low-temperature tetragonal (LTT) phase, breaks at Tc, which is consistent with the previous report by Lee et al. for the optimally doped x=0.15 sample. As for x=0.10 and 0.12, on the other hand, the softening continues even below Tc. It is thus clarified that the breaking of soft phonon is characteristic "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9908217","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/9908217/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9908217","created_at":"2026-07-04T16:13:10.031124+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9908217v1","created_at":"2026-07-04T16:13:10.031124+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9908217","created_at":"2026-07-04T16:13:10.031124+00:00"},{"alias_kind":"pith_short_12","alias_value":"NUUROEFLRQNJ","created_at":"2026-07-04T16:13:10.031124+00:00"},{"alias_kind":"pith_short_16","alias_value":"NUUROEFLRQNJVI2Q","created_at":"2026-07-04T16:13:10.031124+00:00"},{"alias_kind":"pith_short_8","alias_value":"NUUROEFL","created_at":"2026-07-04T16:13:10.031124+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX","json":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX.json","graph_json":"https://pith.science/api/pith-number/NUUROEFLRQNJVI2QIQPRJIBFJX/graph.json","events_json":"https://pith.science/api/pith-number/NUUROEFLRQNJVI2QIQPRJIBFJX/events.json","paper":"https://pith.science/paper/NUUROEFL"},"agent_actions":{"view_html":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX","download_json":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX.json","view_paper":"https://pith.science/paper/NUUROEFL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/9908217&json=true","fetch_graph":"https://pith.science/api/pith-number/NUUROEFLRQNJVI2QIQPRJIBFJX/graph.json","fetch_events":"https://pith.science/api/pith-number/NUUROEFLRQNJVI2QIQPRJIBFJX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX/action/storage_attestation","attest_author":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX/action/author_attestation","sign_citation":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX/action/citation_signature","submit_replication":"https://pith.science/pith/NUUROEFLRQNJVI2QIQPRJIBFJX/action/replication_record"}},"created_at":"2026-07-04T16:13:10.031124+00:00","updated_at":"2026-07-04T16:13:10.031124+00:00"}