{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JNDFYRDRAWHVRSB6JVLLPVTH72","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":"00ff690dc373e1551e05e9648a4729b4bcc46174fb46e1a37a7f82757080c1fc","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-10-07T09:18:44Z","title_canon_sha256":"acdc29cecf4c563ae73e47372f74a8fea4915e23312c44ff9e2103922ba98671"},"schema_version":"1.0","source":{"id":"1910.02682","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.02682","created_at":"2026-07-05T00:10:10Z"},{"alias_kind":"arxiv_version","alias_value":"1910.02682v1","created_at":"2026-07-05T00:10:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.02682","created_at":"2026-07-05T00:10:10Z"},{"alias_kind":"pith_short_12","alias_value":"JNDFYRDRAWHV","created_at":"2026-07-05T00:10:10Z"},{"alias_kind":"pith_short_16","alias_value":"JNDFYRDRAWHVRSB6","created_at":"2026-07-05T00:10:10Z"},{"alias_kind":"pith_short_8","alias_value":"JNDFYRDR","created_at":"2026-07-05T00:10:10Z"}],"graph_snapshots":[{"event_id":"sha256:5a59a5122e7a7c841c76daec3d73f170ebe73d7956504de18e6405b82b8458ef","target":"graph","created_at":"2026-07-05T00:10:10Z","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/1910.02682/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Polarized Raman spectra of the epitaxial Ba0.5Sr0.5TiO3 film, bi-color BaTiO3/Ba0.5Sr0.5TiO3 superlattice, and tri-color BaTiO3/Ba0.5Sr0.5TiO3/SrTiO3 superlattice were studied in a broad temperature range of 80-700 K. Based on the temperature dependence of the polar modes we determined the phase transitions temperatures in the studied heterostructures. In the sub-THz frequency range of the Y(XZ)Y spectra, we revealed the coexistence of the Debye-type central peak and soft mode in bi-color BaTiO3/Ba0.5Sr0.5TiO3 superlattice.","authors_text":"A. G. Razumnaya, A. Kumar, A. S. Mikheykin, D. Mezzane, E. D. Gor'kovaya, I. A. Luk'yanchuk, N. Ortega, R. S. Katiyar, V. I. Torgashev, Yu. A. Tikhonov","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-10-07T09:18:44Z","title":"Properties of the low-frequency phonon spectra of ferroelectric barium titanate-based heterostructures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.02682","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":"sha256:2ad4a06ff3a5907c89c4805818e3ae587f57fa8f8643967fc724dedb227da830","target":"record","created_at":"2026-07-05T00:10:10Z","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":"00ff690dc373e1551e05e9648a4729b4bcc46174fb46e1a37a7f82757080c1fc","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-10-07T09:18:44Z","title_canon_sha256":"acdc29cecf4c563ae73e47372f74a8fea4915e23312c44ff9e2103922ba98671"},"schema_version":"1.0","source":{"id":"1910.02682","kind":"arxiv","version":1}},"canonical_sha256":"4b465c4471058f58c83e4d56b7d667fe804813510e40fa040aad491a18ac2aed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b465c4471058f58c83e4d56b7d667fe804813510e40fa040aad491a18ac2aed","first_computed_at":"2026-07-05T00:10:10.548656Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:10:10.548656Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AjVGoDeoZnmaut3wC2nOXpcFn4AJ8ducNhErxWopB6sLXhv5pkYDPCAQ49NXHUgfyopmNJI0VMYRvMg6ACQ/Cw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:10:10.549100Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.02682","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ad4a06ff3a5907c89c4805818e3ae587f57fa8f8643967fc724dedb227da830","sha256:5a59a5122e7a7c841c76daec3d73f170ebe73d7956504de18e6405b82b8458ef"],"state_sha256":"e9f14dcc6191890b2b71e8358ff5f40d4364f4d2b9e33dc909b8ab3b3f8217c5"}