{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:QDSIKHF53FWA3RWCKHPHBCSO7G","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":"9c07518694af796be04cf8369ac782ff6c3b80f449890d4dad506eabd87f9784","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-02T10:08:02Z","title_canon_sha256":"a5895ec6104ab8a2d7a4d953dad5189f0a4c645e2a19084c78bef3830a270095"},"schema_version":"1.0","source":{"id":"2111.01464","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.01464","created_at":"2026-07-05T03:28:03Z"},{"alias_kind":"arxiv_version","alias_value":"2111.01464v1","created_at":"2026-07-05T03:28:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.01464","created_at":"2026-07-05T03:28:03Z"},{"alias_kind":"pith_short_12","alias_value":"QDSIKHF53FWA","created_at":"2026-07-05T03:28:03Z"},{"alias_kind":"pith_short_16","alias_value":"QDSIKHF53FWA3RWC","created_at":"2026-07-05T03:28:03Z"},{"alias_kind":"pith_short_8","alias_value":"QDSIKHF5","created_at":"2026-07-05T03:28:03Z"}],"graph_snapshots":[{"event_id":"sha256:faa72437ede6732bef65a7dc7d1a9e8645a95a405db7e3492c005c1cf541863b","target":"graph","created_at":"2026-07-05T03:28:03Z","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/2111.01464/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A coherent THz optical lattice mode is triggered by femtosecond laser pulses in the antiferromagnetic van der Waals semiconductor FePS$_3$. The 380 nm thick exfoliated flake was placed on a substrate and laser-driven lattice and spin dynamics were investigated as a function of the excitation photon energy and sample temperature. The pump-probe spectroscopic measurements reveal that the photo-induced phonon is generated by a displacive mechanism. The amplitude of the phononic signal decreases as the sample is heated up to the N\\'eel temperature and vanishes as the phase transition to the parama","authors_text":"Alberta Bonanni, Alexandra M. Kalashnikova, Carla Boix-Constant, Davide Bossini, David M\\\"onkeb\\\"uscher, Eugenio Coronado, Fabian Mertens, Margherita Matzer, Mirko Cinchetti, Rajdeep Adhikari, Samuel Ma\\~nas-Valero","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-02T10:08:02Z","title":"Ultrafast coherent THz lattice dynamics coupled to spins in a van der Waals antiferromagnetic flake"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.01464","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":"sha256:5db2422546f594a5544095521143de2d4ea50a762dbf1b1aaa59df8fb5811ef2","target":"record","created_at":"2026-07-05T03:28:03Z","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":"9c07518694af796be04cf8369ac782ff6c3b80f449890d4dad506eabd87f9784","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-02T10:08:02Z","title_canon_sha256":"a5895ec6104ab8a2d7a4d953dad5189f0a4c645e2a19084c78bef3830a270095"},"schema_version":"1.0","source":{"id":"2111.01464","kind":"arxiv","version":1}},"canonical_sha256":"80e4851cbdd96c0dc6c251de708a4ef9a366f49e44350baebfd9541c7998ebbd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80e4851cbdd96c0dc6c251de708a4ef9a366f49e44350baebfd9541c7998ebbd","first_computed_at":"2026-07-05T03:28:03.409995Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:28:03.409995Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XrVCD+W4HCUu6IEjm9bgj8wTlHUSq5NVcDaXCnVGpjGeqRLn+2YXZrUNHyQng6SME0NmEzBgNfosiNDRWlkbBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:28:03.410468Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.01464","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5db2422546f594a5544095521143de2d4ea50a762dbf1b1aaa59df8fb5811ef2","sha256:faa72437ede6732bef65a7dc7d1a9e8645a95a405db7e3492c005c1cf541863b"],"state_sha256":"5e34f3f4d2c2491fc5e542bb5af1ace85861b653c678d74775dad5ffc1d97f16"}