{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:M4GZRTLNCJ2P3GDMLURKQNVA2I","short_pith_number":"pith:M4GZRTLN","schema_version":"1.0","canonical_sha256":"670d98cd6d1274fd986c5d22a836a0d20a0020341d1a6fd2b3900a6ca403f4d7","source":{"kind":"arxiv","id":"1812.04903","version":1},"attestation_state":"computed","paper":{"title":"Ultrafast THz probe of photo-induced polarons in lead-halide perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Annamaria Petrozza, Caterina Vozzi, Daniele Meggiolaro, Eugenio Cinquanta, Filippo De Angelis, Liberato Manna, Marcelo J. P. Alcocer, Marina Gandini, Quinten Adriaan Akkerman, Salvatore Stagira, Silvia G. Motti","submitted_at":"2018-12-12T11:24:31Z","abstract_excerpt":"We study the nature of photo-excited charge carriers in CsPbBr3 nanocrystal thin films by ultrafast optical pump - THz probe spectroscopy. We observe a deviation from a pure Drude dispersion of the THz dielectric response that is ascribed to the polaronic nature of carriers; a transient blueshift of observed phonon frequencies is indicative of the coupling between photogenerated charges and stretching-bending modes of the deformed inorganic sublattice, as confirmed by DFT calculations."},"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":"1812.04903","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-12-12T11:24:31Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"bf0ea9ba30ef15d4b357d275584eaf7ebf27ec949670200a913b25a611a52cd1","abstract_canon_sha256":"206768cd2d5f8995efd8c6327872245099d9c12bcdd6c9b8ca9331ef5fb99413"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:19.656788Z","signature_b64":"j36D5r3L+XNmGl9QsEyUpRgf7Saf7TsxJa6Ns7r610h0+9LSGI9/DMGVGRexuu5u+9VR/z9lCShrZHzwQ9r6BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"670d98cd6d1274fd986c5d22a836a0d20a0020341d1a6fd2b3900a6ca403f4d7","last_reissued_at":"2026-05-17T23:47:19.656236Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:19.656236Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Ultrafast THz probe of photo-induced polarons in lead-halide perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Annamaria Petrozza, Caterina Vozzi, Daniele Meggiolaro, Eugenio Cinquanta, Filippo De Angelis, Liberato Manna, Marcelo J. P. Alcocer, Marina Gandini, Quinten Adriaan Akkerman, Salvatore Stagira, Silvia G. Motti","submitted_at":"2018-12-12T11:24:31Z","abstract_excerpt":"We study the nature of photo-excited charge carriers in CsPbBr3 nanocrystal thin films by ultrafast optical pump - THz probe spectroscopy. We observe a deviation from a pure Drude dispersion of the THz dielectric response that is ascribed to the polaronic nature of carriers; a transient blueshift of observed phonon frequencies is indicative of the coupling between photogenerated charges and stretching-bending modes of the deformed inorganic sublattice, as confirmed by DFT calculations."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.04903","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":""},"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":"1812.04903","created_at":"2026-05-17T23:47:19.656324+00:00"},{"alias_kind":"arxiv_version","alias_value":"1812.04903v1","created_at":"2026-05-17T23:47:19.656324+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.04903","created_at":"2026-05-17T23:47:19.656324+00:00"},{"alias_kind":"pith_short_12","alias_value":"M4GZRTLNCJ2P","created_at":"2026-05-18T12:32:37.024351+00:00"},{"alias_kind":"pith_short_16","alias_value":"M4GZRTLNCJ2P3GDM","created_at":"2026-05-18T12:32:37.024351+00:00"},{"alias_kind":"pith_short_8","alias_value":"M4GZRTLN","created_at":"2026-05-18T12:32:37.024351+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/M4GZRTLNCJ2P3GDMLURKQNVA2I","json":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I.json","graph_json":"https://pith.science/api/pith-number/M4GZRTLNCJ2P3GDMLURKQNVA2I/graph.json","events_json":"https://pith.science/api/pith-number/M4GZRTLNCJ2P3GDMLURKQNVA2I/events.json","paper":"https://pith.science/paper/M4GZRTLN"},"agent_actions":{"view_html":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I","download_json":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I.json","view_paper":"https://pith.science/paper/M4GZRTLN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1812.04903&json=true","fetch_graph":"https://pith.science/api/pith-number/M4GZRTLNCJ2P3GDMLURKQNVA2I/graph.json","fetch_events":"https://pith.science/api/pith-number/M4GZRTLNCJ2P3GDMLURKQNVA2I/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I/action/timestamp_anchor","attest_storage":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I/action/storage_attestation","attest_author":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I/action/author_attestation","sign_citation":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I/action/citation_signature","submit_replication":"https://pith.science/pith/M4GZRTLNCJ2P3GDMLURKQNVA2I/action/replication_record"}},"created_at":"2026-05-17T23:47:19.656324+00:00","updated_at":"2026-05-17T23:47:19.656324+00:00"}