{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:LJULOFVFWW323TEOWROBCWQ7JG","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":"94aed332c87af5f69a8e23d740fa3d4efbfb8e8e8da80999f89f51e563cfce89","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-02-01T04:10:11Z","title_canon_sha256":"b56ce45f674316d516ea8e8a1b3c8d6d4339f2527f8cf8d60d3321a295e12499"},"schema_version":"1.0","source":{"id":"2302.00226","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.00226","created_at":"2026-07-05T05:38:01Z"},{"alias_kind":"arxiv_version","alias_value":"2302.00226v1","created_at":"2026-07-05T05:38:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.00226","created_at":"2026-07-05T05:38:01Z"},{"alias_kind":"pith_short_12","alias_value":"LJULOFVFWW32","created_at":"2026-07-05T05:38:01Z"},{"alias_kind":"pith_short_16","alias_value":"LJULOFVFWW323TEO","created_at":"2026-07-05T05:38:01Z"},{"alias_kind":"pith_short_8","alias_value":"LJULOFVF","created_at":"2026-07-05T05:38:01Z"}],"graph_snapshots":[{"event_id":"sha256:c14f0ddd7aad7c5e41ab5e86b2d11f5912d178841bccbd375ca4c279c6f0decb","target":"graph","created_at":"2026-07-05T05:38:01Z","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/2302.00226/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have carried out temperature-dependent x-ray diffraction and Raman scattering experiments on powder $Cs_3Bi_2Br_9$. Trigonal to monoclinic structural transition at around 95 K is discussed and shown to be driven by the softening of the soft mode. We propose a model to describe the dynamics of the incomplete soft-mode. Raman scattering experiments demonstrate the origin of the soft mode to the rocking motions of Br atoms that participate to form $BiBr_6$ octahedra, which correlates the reported theoretical calculations. Some of the Raman mode frequencies exhibit anomalous temperature depende","authors_text":"Aritra Mazumder, Bishnupada Ghosh, Debabrata Samanta, Goutam Dev Mukherjee, Pinku Saha, Sayan Bhattacharyya, Sonu Pratap Chaudhary","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-02-01T04:10:11Z","title":"Phonon anharmonicity and soft-phonon mediated structural phase transition in $Cs_3Bi_2Br_9$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.00226","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:d98831f12fd0a88339bace347b6dcecab70c738fc09cdc72d61a3d8dee01240a","target":"record","created_at":"2026-07-05T05:38:01Z","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":"94aed332c87af5f69a8e23d740fa3d4efbfb8e8e8da80999f89f51e563cfce89","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2023-02-01T04:10:11Z","title_canon_sha256":"b56ce45f674316d516ea8e8a1b3c8d6d4339f2527f8cf8d60d3321a295e12499"},"schema_version":"1.0","source":{"id":"2302.00226","kind":"arxiv","version":1}},"canonical_sha256":"5a68b716a5b5b7adcc8eb45c115a1f4989364201db9feb2a99853822b7b29b0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a68b716a5b5b7adcc8eb45c115a1f4989364201db9feb2a99853822b7b29b0e","first_computed_at":"2026-07-05T05:38:01.077618Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:38:01.077618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C+xca+uYyV1RwYOGRIRbduOZHH0gt211r/VB1pk6hs+HdcIWGOPYH/Il69ONCYhbiCeAUQtHzfF9BSkxv4gDBg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:38:01.078037Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.00226","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d98831f12fd0a88339bace347b6dcecab70c738fc09cdc72d61a3d8dee01240a","sha256:c14f0ddd7aad7c5e41ab5e86b2d11f5912d178841bccbd375ca4c279c6f0decb"],"state_sha256":"87b439ce061b484aaa5148e8183c8c3cfb658a8419ccb5307f8d58361a4ade96"}